YYYEAAA
100% bro
Hope that help
When one nucleus after another is split _____.
a double nucleus is formed.
a neutron split occurs.
a chain reaction begins
Hey There,
When one nucleus after another is split,
C) A chain reaction begins
Best Of Luck,
- I.A. -
Answer: A chain reaction begins
Help! What did I do wrong??
Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 48.7 g of sodium are added to water? Show your work. (4 points)
2Na + 2H2O ---> 2NaOH + H2
2Na + 2H2O ---> 2NaOH + H2
48.7 g ? molecules
2 mol Na= 1 mol H2
1 mol Na= 23g Na
1 mol H2= 6.02x1023 molecules
(48.7g Na/1)x(1 mol Na/23g Na)x(1 mol H2/2mol Na)x(6.02x1023/1 mol H2)
(48.7)(6.02x1023)/(23)(2)= 293.174x1023 molecules
Can someone please tell me what I did wrong?
The molecules of hydrogen gas that are formed is when 48.7 g of sodium are added to water is 6.375 x 10²³ molecules
calculation
2 Na +2H₂O → 2 NaOH +H₂
Step 1: find the moles of sodium (Na)
moles =mass÷ molar mass
from periodic table the molar mass of Na = 23 g/mol
moles= 48.7 g÷ 23 g/mol =2.117 moles
Step 2:use the mole ratio to determine the moles of H₂
from given equation Na:H₂ is 2:1
therefore the moles of H₂ = 2.117 moles x 1/2=1.059 moles
Step 3: find the molecules of H₂ using the Avogadro's law
According to Avogadro's law 1 mole = 6.02 x 10²³ molecules
1.059 moles = ? molecules
by cross multiplication
= [(1.059 moles x 6.02 x10²³ molecules) / 1 mole] =6.375 x 10²³ molecules
According to the modern day model of the atom, the nucleus of an atom is surrounded by one or more
Answer is: electrons.
According to the Bohr model of the atom:
1. Electrons orbit the nucleus in orbits that have a set size and energy.
2. Energy levels of electrons are discrete (certain discrete values of energy).
3. Electrons can jump from one energy level to another, absorbing or emitting electromagnetic radiation with a frequency ν (energy difference of the levels).
The electron (symbol: e⁻) is a subatomic particle whose electric charge is negative one elementary charge.
Proton is a subatomic particle with a positive electric charge of +1e elementary charge.
Beside negatively charged electrons, atoms have positively charged protons, so atoms have neutral charge.
A student wants to prepare 250.0 mL of 0.10 M NaCl solution. Which procedure is most appropriate? (formula Molar Mass of NaCl = 58.4 g/mol)
A) Add 5.84 g of NaCl to 250. mL of H2O
B) Add 1.46 g of NaCl to 250. mL of H2O
C) Dissolve 5.84 g of NaCl in 50 mL of H2O and dilute to 250. mL
D) Dissolve 1.46 g of NaCl in 50 mL of H2O and dilute to 250. mL
The correct answer is option B, that is, add 1.46 grams of NaCl to 250 milliliters of H₂O.
First there is a need to find the moles of NaCl in 250 ml of 0.10 M NaCl,
Moles of NaCl = molarity × volume = 0.10 M × (250/1000L) = 0.025 mol
The corresponding mass of NaCl is,
Mass of NaCl = moles × molar mass = 0.025 mol × 58.5 g/mol = 1.46 g
Thus, there is a need to dissolve 1.46 grams of NaCl solid into 50 ml of H₂O and dilute to 250 ml.
The most appropriate procedure to prepare a 0.10 M NaCl solution with a volume of 250.0 mL is to dissolve 1.46 g of NaCl in 50 mL of water and dilute to 250 mL.
Explanation:The most appropriate procedure to prepare a 0.10 M NaCl solution with a volume of 250.0 mL is option D. Dissolve 1.46 g of NaCl in 50 mL of H2O and dilute to 250 mL.
To determine the amount of NaCl needed, we can use the molarity formula:
Molarity = (moles of solute) / (volume of solution in liters)
Using the given molarity of 0.10 M and the volume of 0.250 L (250 mL), we can rearrange the formula to solve for moles of solute:
moles of solute = molarity * volume of solution
Substituting the values, we get:
moles of solute = (0.10 M) * (0.250 L) = 0.025 moles
And finally, we can calculate the mass of NaCl needed using the molar mass:
mass = moles of solute * molar mass
mass = (0.025 moles) * (58.4 g/mol) = 1.46 g
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What is the weight of 4.30 mole of sodium
98.857g Na
To find this, set up an equation as so:
4.3 mol Na = [tex]\frac{22.99g Na}{1 mol Na}[/tex]
Multiply everything on the top and divide that by everything on the bottom to get the final answer of 98.857g Na.
Hope this helps!
Which of the following is not true of acids?
1. acids are corrosive
2. dillute acids feel slippery
3. acids have a distinctly sour taste
4. acids have more hydronium ions than hydroxide ions
Answer is: 2. dillute acids feel slipper.
1) Acids are corrosive is correct. For example hydrochloric acid (HCl) will react with most metals.
2) Dillute acids feel slippery is not correct. Bases, for example solution of sodium hydroxide feels slipery.
3) Acids have a distinctly sour taste is correct. For example, vinegar is mixture of acetic acid (CH₃COOH) and water (H₂O). Vinegar is colourless liquid with sour taste and pungent smell, freezing point of the vinegar is lower than glacial acetic acid.
4) Acids have more hydronium ions than hydroxide ions is correct. Because acid gives a lot of hydrogen cations (H⁺), pH (pH = -log[H⁺]) is lower than seven (acidic solution).
Answer: its (2) dillute acids feel slippery
Explanation:
its a base not acid
PLEASE HELP ASAP 50 POINTS!!!
(only answer if you know for sure, please and ty)
The atomic number of an atom is the number of ____.
A.protons
B.neutrons
C.electrons and neutrons combined
D.protons and neutrons combined
An ion is an atom ____.
A. That has the same number of protons and electrons.
B. That has an unequal number of protons and electrons.
C. That has an unequal number of protons and neutrons.
D. That has the same number of protons and neutrons.
Which of the following is true regarding photosynthesis and respiration?
A. All cells can undergo both photosynthesis and respiration.
B. Photosynthesis occurs in the chloroplasts; respiration occurs in the mitochondria.
C. Photosynthesis breaks down glucose; respiration makes glucose.
D. Photosynthesis occurs in the mitochondria; respiration occurs in the chloroplasts.
The atomic number of an atom is the number of A.protons An ion is an atom D. That has the same number of protons and neutrons.
Which of the following is true regarding photosynthesis and respiration? C. Photosynthesis breaks down glucose; respiration makes glucose. hope this helps
1. The atomic number of an atom is the number of protons in the nucleus.
2. An ion is an atom that has an unequal number of protons and electrons.
3. Photosynthesis occurs in the chloroplasts; respiration occurs in the mitochondria.
true or false: energy can change from one form to another.
True!
Energy can change from Potential to Kinetic and so on.
This is actually called energy transformation!
Please help
What are 4 examples of ionically bonded compounds?
what type of intermolecular force contributes to the high boiling point of water??
Hydrogen bonding, a particularly strong dipole-dipole force, causes a powerful attraction between water molecules, which results in a high boiling point.
Which of the following statements about halogens is true? They are non metals that exist as single atoms, They are metals that exist as single atoms, They are non metals that exist as molecules of two atoms, They are metals that exist as molecules of two atoms
4 annnnnd 3
kio too no
Answer:
4 and 3
Explanation:
When urea dissolves in water, the beaker becomes cold. Which statement describes this process? A) The ΔHsolvation is endothemic but the overall ΔHsolution is exothermic. B) The ΔHsolvation is exothermic and the overall ΔHsolution is exothermic. C) The ΔHsolvation is exothermic but the overall ΔHsolution is endothermic. D) The ΔHsolvation is endothermic and the overall ΔHsolution is endothemic.
The answer is; D
Solvation is the process by which the molecules of a solute interact with those of a solvent to form solvates. The interaction involves the formation of temporary bonds between the molecules of the elements. These bonds in this rection absorb energy from the atmosphere hence the reaction feels cold to the touch. This is called an endothermic reaction.
its c not d i just answered it
As air becomes more dense, _____. (Select all that apply)
O. air weighs less
O. gas molecules are closer together
O. air is colder
O. air weighs more
O. gas molecules are further apart
O. air is hotter
The answers that apply are;
gas molecules are closer togetherair weighs moreair is hotterWhen air is compressed, it means the same volume of space is occupied by more air molecules. This, therefore, means that the molecules are hitting each other with a higher frequency hence become hotter with more compression. It weighs more because there are more molecules in the same volume of space.
Answer:
air weighs more
air molecules are closer together
air is colder
Explanation: Trust me, I did the test and it was correct
Isabel’s first car had a manual stick shift. After many years of driving an automatic car, she needs to use her sister’s car, which also has a stick shift. Isabel takes a few minutes to get used to shifting gears. Which memory system is she using to recall this information?
The answer would be procedural memory
Answer: Isabel has to recall the information about using a manual stick shift. For this reason, she is using long-term, explicit, declarative and episodic memory system.
Human memory system can be broadly classified as: sensory memory, short-term memory and long-term memory.
Long-term memory is used to recall information. If the information are about facts, events and experiences then explicit, declarative and episodic memory helps to recall all information. This will help Isabel to recall all information about driving a car with a manual stick shift and she will be able to drive her sister's car.
Isabel is using her procedural memory system to recall the information needed to operate a manual stick shift car. Procedural memory is a type of long-term memory that stores information about how to perform various skills and tasks, including those that involve motor skills and sequences of actions.
In this case, Isabel has previously learned how to operate a manual transmission car, and this knowledge is stored in her procedural memory. However, after many years of driving an automatic car, the specific motor skills and sequential actions required to shift gears in a manual car may have become less automatic for her.
When she gets into her sister's car with a manual transmission, she needs a few minutes to reacquaint herself with the physical movements and coordination required to shift gears. During this process, she is accessing her procedural memory to retrieve the previously learned information about operating a manual stick shift, and her brain is working to reestablish the neural pathways and muscle memory associated with this skill.
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Steam is a form of _____.
A.humidity
B.liquid water
C.water vapor
D.precipitation
The answer to this question is A. Humidity.. because humitity causes steam
the answer is C. water vapor
which allows psychologists and psychiatrists to diagnose mental disorders in patients?
A. DSM
B. TAT
C. MMPI
D. Manual of Abnormalities
I think it is A. DSM
Psychologists and psychiatrists use the Diagnostic and Statistical Manual of Mental Disorders (DSM) to diagnose mental disorders, with the current version being DSM-5, published by the American Psychiatric Association in 2013.
Psychologists and psychiatrists diagnose mental disorders in patients using the Diagnostic and Statistical Manual of Mental Disorders (DSM). This manual provides a comprehensive set of criteria for diagnosing various mental health conditions.
It includes detailed descriptions of each disorder, diagnostic criteria, prevalence information, and associated risk factors. The DSM is not only utilized by mental health professionals but also by researchers, health insurance companies, and policymakers. Developed and published by the American Psychiatric Association, the DSM has undergone several revisions, with the most recent edition being DSM-5, released in 2013.
The correct answer to the question of which tool allows professionals to diagnose mental disorders is D. Diagnostic and Statistical Manual of Mental Disorders.
differentiate between crystalline and amorphous solid.
1) Amorphous means “without form or structure".
In amorphous solid atoms and molecules are not organized in a definite lattice pattern. For example plastic, gel or glass.
Crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
2) Amorphous solids do not have definite melting points.
Crystalline solids have definitive melting point.
12. A satellite in space experiences direct sunlight and heats up. During periods when it receives no direct sunlight, (1 point)
the satellite cools off by radiation.
the satellite cools off by conduction.**
the satellite maintains a constant temperature.
the satellite cools off by convection.
13. Use the image below to answer the following question.
A photo shows a pair of sandals and a sunglass case on a beach.
A beachgoer leaves a pair of sandals on the shore while she swims. When she puts the sandals on again, the bottom of her feet will feel hot because _____. Choose all that apply.
(2 points)
the sandals were warmed by radiation**
heat will transfer to her feet by radiation
heat will transfer away from her feet by conduction
heat will transfer to her feet by conduction
14. Four positively charged particles are at various distances from a positively charged plate. The particles are equally charged and do not influence each other. Which particle has the greatest potential energy?
The bottom of a rectangular area shows a row of positive signs that represent the positively charged plate. Four starburst icons labeled A, B, C, and D represent the positively charged particles. A is closest to the plate; B is farther away than A; C is farther away than B; and D is farther away than C.In row 1, column 1 is labeled upper A, column 2 is labeled upper B,
column 3 is labeled upper C, and column 4 is labeled upper D. In row 2, there is a symbol representing a positively charged ion near the bottom of column 1. The symbol is shaded a different color than the background. In row 2, column 2, the ion symbol is a little higher than it was in column 1. In row 2, column 3, the ion symbol is a little higher than it was in column 2. In row 2, column 4, the ion symbol is near the top of the column. In row 3, all of the columns are merged together. The row is shaded the same color as the ion symbols in row 2, and there are 9 positive signs, spaced evenly across the row. (1 point)
A
B
C**
D
15. Use the image below to answer the following question.
A man prepares to use a bow and arrow by pulling the arrow back against the string of the bow.
Which of the following energy changes occurs as a bow is drawn and released?
(1 point)
gravitational potential to chemical potential**
magnetic potential to kinetic
elastic potential to kinetic
kinetic to thermal
16. Jerri is planning to rebuild the engine of an antique car. She has chosen all the materials she needs, including a high-quality synthetic oil to reduce friction in the engine. What effect will reducing friction have on the engine’s performance? Choose all that apply. (2 points)
Reduced friction means reduced efficiency.
Reduced friction means reduced heat transfer.
Reduced friction means increased efficiency.
Reduced friction means increased heat transfer. **
17. During a space shuttle landing, a parachute deploys from the back of the shuttle as it taxis down the runway. In addition to the speed brake, the parachute helps the shuttle come to a complete stop. How does the parachute help during this process? (1 point)
It increases the weight of the shuttle.
It increases the potential energy of the shuttle.
It increases friction by air resistance.**
It increases heat transfer by radiation.
12. The answer is; the satellite cools off by radiation
In the vacuum of space, there is no medium for convectional heat transfer. Only electromagnetic radiation transfer energy through space. The satellite will, therefore, lose heat through infra-red radiation, not convection.
13. The answer is; heat will transfer to her feet by conduction
When the beachgoer wears her sandals, he makes contact with the sandals and his foot and sandal becomes one thermodynamic system. The heat transfer by conduction, as it passes through the skin, seeks thermal equilibrium.
15. The answer is; elastic potential to kinetic
The more the string of the bow is pulled, the higher the elastic potential energy it gains. This is because the string is stretched and has the capacity to restore normal size when released. When the string is released and begins to rapidly restore, it transfers this energy to the arrow, pushing the arrow forward.
16. The answer is; Reduced friction means increased efficiency.
By lubricating the moving components of the engine, friction is reduced. Friction causes a loss of energy as the energy is lost through heat as the components rub against one another. Reduction of friction, therefore, reduces this loss and more energy is channeled towards the drive shaft.
17. The answer is; It increases friction by air resistance.
A parachute is designed to increase drag exceptionally hence reduce the speed of a moving object drastically. Drag is induced by frictional resistance. When the parachute deploys, air is impeded from passing smoothly over the parachute hence enormous air resistance is developed causing the space shuttle to reduce speed.
This answer explains concepts related to satellite cooling, heat transfer in sandals, potential energy of particles, energy changes in a bow and arrow, and the effect of reducing friction in an engine.
Explanation:12. When a satellite in space receives no direct sunlight, it cools off by radiation.
13. When a beachgoer leaves her sandals on the shore and puts them back on after swimming, the bottom of her feet feel hot because the sandals were warmed by radiation.
14. In the given scenario, particle C has the greatest potential energy.
15. As a bow is drawn and released, the energy change that occurs is from elastic potential to kinetic.
16. Reducing friction in an engine will result in reduced heat transfer.
17. The parachute helps the space shuttle come to a complete stop during landing by increasing friction by air resistance.
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You are riding a bicycle home from school. You average 5 meters per second and you are headed south. What motion can you determine from this data? A Acceleration B Distance C Speed D Velocity
Answer : The correct option is, (D) Velocity
Explanation :
Velocity : It measures the speed of an object in a particular direction. It is a vector quantity. It depends on the magnitude and the direction. The S.I unit of velocity is, [tex]m/s[/tex]
Distance : It measures the length between the two objects. The S.I unit of distance is, meter.
Speed : It is defined as the distance traveled per unit of time. It does not have a direction. The S.I unit of speed is, [tex]m/s[/tex]
Acceleration : It is defined as the rate of change of velocity of an object with respect to time. The S.I unit of acceleration is, [tex]m/s^2[/tex]
Hence, the motion we can determine from the given data is, velocity.
You are riding a bicycle home from school. The average speed 5 m/s headed towards south.The motion that determine from this data is D. Velocity .
You can determine the velocity from the given data, as it includes both the speed (5 m/s) and the direction (south).
This makes velocity a vector quantity, distinguishing it from speed, which is scalar.In this context, you can determine the velocity from the given data. Velocity is a vector quantity, which means it includes both the magnitude (speed) and the direction. The problem states that you are riding at an average rate of 5 meters per second (m/s) and heading south. Thus, the velocity is 5 m/s south.It is important to distinguish between speed and velocity:
Speed is a scalar quantity that refers only to how fast something is moving.Velocity is a vector quantity that refers to how fast something is moving in a specific direction.
Correct question is: You are riding a bicycle home from school. The average speed 5 m/s headed towards south. What motion can you determine from this data?
A. Acceleration
B. Distance
C. Speed
D. Velocity
Due to radioactive decay over many millions of years, it is possible for the element uranium to decay in
The uranium within these items is radioactive and should be treated with care. Uranium's most stable isotope, uranium-238, has a half-life of about 4,468,000,000 years. It decays into thorium-234 through alpha decay or decays through spontaneous fission.
Which type of barometer measures air pressure by using a metal chamber that is sensitive to pressure changes?
aneroid
barometric
mercury
millibar
the answer is the first one aneroid measures air pressure using a metal chamber thats sensitive to pressure changes and is using no liquid.
Aneroid
Aneroid Barometers if anybody have a barometer at home , it is probably an aneroid barometer . The word aneroid means with out liquid .An aneroid barometer has an airtight metal chamber , as shown in figure 6 metal chamber is sensitive to change in air pressure.
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The entire range of electromagnetic wave frequencies is known as ______.
A) visible light
B) ultraviolet
C) the electromagnetic spectrum
D) magnetism
Which of the following devices does NOT utilize radio waves?
A) cellular telephone
B) radar
C) satellite
D) television remote control
Which of the following describes a material that allows only some light to pass through?
A) diffuse
B) opaque
C) translucent
D) transparent
The electromagnetic spectrum encompasses all electromagnetic wave frequencies, including visible light, option C is correct. A television remote control does not use radio waves but instead uses infrared light, option D is correct. A material that lets some light pass through, creating a diffused effect, is termed translucent, option C is correct.
The entire range of electromagnetic wave frequencies is known as the electromagnetic spectrum. This spectrum includes all types of electromagnetic radiation, from radio waves and microwaves to infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. The electromagnetic spectrum is categorized by wavelength or frequency, with radio waves being at the low-frequency end and gamma rays at the high-frequency end, option C is correct,
Among the devices listed, the one that does not utilize radio waves is a television remote control. Instead, a television remote typically uses infrared light to communicate with the television. Radio waves are widely used in telecommunications, such as by cellular telephones, radar systems, and satellites to transmit and receive signals, option D is correct.
A material that allows only some light to pass through, neither completely transparent nor completely opaque, is described as translucent. Translucent materials may scatter light as it passes through, allowing light to pass but not detailed images, creating a softer, diffused effect. Examples of translucent materials include frosted glass and some plastics, option C is correct.
8th grade science
Read the list of substances below: Wood, Copper, Iron, Foam Which substances are good conductors of heat? Iron and Foam Copper and Iron Wood and Foam Wood and Copper
Answer:
Copper and Iron
Explanation:
Metals, like copper and iron, are good conductors of heat; that is because metals are bounded by a 'cloud' of free electrons and these electrons can carry easily kinetic energy through the metal
On the other hand, foam and wood are isolators, that is, they are bad conductors of heat.
Answer:
B
Explanation:
Pls assist if you can.
Reasons why hydrogen was chosen as a standard reference to other elements
Answer:
See below
Step-by-step explanation:
Hydrogen either reacts with or is formed by reactions with many other elements, so chemists could use it directly to determine their relative masses. Hydrogen has the smallest atomic mass, so it was convenient to give H a relative atomic mass of 1 and assign those of other elements as multiples of this number.The O = 16 scale became the standard in 1903 and carbon-12 was chosen in 1961.
Using the equation 2H2+O2=2H2O, when 47g of water are produced, how many grams of hydrogen must react?
See , from the equation we can see that for forming two mole of H2O 2Mole of H2 has to react.
Mass of 2 Mole H2O is 18*2gm or 36gm.
So for forming 36 gm H2O 2×2 I.e. 4 gm H2 has to take part in reaction.
Therefore, to form 1 gm H2O 4÷36 gm of H2 has to take part.
So, for forming 47gm H2O (4÷36)×47 gm H2 has to take part
I.e. 5.22 gm of H2 has to take part
So, ans is 5.22 gm of hydrogen.
Hope it helps!!!
Answer: Mass of hydrogen gas that must react will be 5.22 grams.
Explanation:
To calculate the number of moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ....(1)
Given mass of water = 47 g
Molar mass of water = 18 g/mol
Putting values in above equation, we get:
[tex]\text{Moles of }H_2O=\frac{47g}{18g/mol}=2.61mol[/tex]
For the given balanced chemical equation:
[tex]2H_2+O_2\rightarrow 2H_2O[/tex]
By Stoichiometry of the reaction:
2 moles of water are formed from 2 moles of hydrogen gas.
So, 2.61 moles of water will be formed from [tex]\frac{2}{2}\times 2.61=2.61mol[/tex] of hydrogen gas.
Now, calculating the mass of hydrogen by using equation 1:
Moles of hydrogen gas = 2.61 moles
Molar mass of hydrogen gas = 2 g/mol
Putting values in equation 1, we get:
[tex]2.61mol=\frac{\text{Mass of hydrogen gas}}{2g/mol}\\\\\text{Mass of hydrogen gas}=5.22g[/tex]
Hence, mass of hydrogen gas that must react will be 5.22 grams.
Whats sodium stannite?and how can it be prepared?
A chemical reaction has just occurred in an insulated isolated system which caused an overall increase in the potential energy of the system. Which statement below is true?
Select one:
a. The temperature of the system decreased.
b. The temperature of the system increased.
c. Heat was taken in from the surroundings by the system.
d. Heat was given off to the surroundings by the system.
In an isolated system, the increase in potential energy caused by a chemical reaction is compensated by a decrease in temperature, as no energy or matter is exchanged with the surroundings.
Explanation:In an isolated system, no matter or energy is exchanged with the surroundings. Therefore, when a chemical reaction occurs in an isolated system causing an increase in potential energy, the energy does not come from an external source but rather a conversion from another form of energy within the system. This conversion means that heat (internal energy) was used to increase the potential energy. As a result, since the total energy in the system must remain constant (Law of Conservation of Energy), the temperature of the system would have to decrease to compensate for the energy used in increasing the potential energy (as per the definition of temperature as a measure of the average kinetic energy of the particles in a system). Therefore, statement A is true: the temperature of the system decreased.
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Calculate the kinetic energy, in J/mole, of 1.00 mole of gaseous water molecules at room temperature (25.0ºC).
Answer : The kinetic energy is, [tex]3.716\times 10^{3}J/mol[/tex]
Explanation :
The formula for kinetic energy is:
[tex]K.E=\frac{3}{2}RT[/tex]
where,
R = gas constant = 8.314 J/mol.K
T = temperature = [tex]25.0^oC=273+25.0=298.0K[/tex]
Now put all the given values in the above kinetic energy formula, we get:
[tex]K.E=\frac{3}{2}\times (8.314J/mol.K)\times (298.0K)[/tex]
[tex]K.E=3.716\times 10^{3}J/mol[/tex]
Therefore, the kinetic energy is, [tex]3.716\times 10^{3}J/mol[/tex]
the amount of water vapor in the air, compared to the maximum amount that can be held at a specific air temperature is called:
1. Dew Point
2. Relative Humidity
3. Precipitation
4. Crystallization
Answer: D relative humidity
Explanation: Just took the test.
Relative Humidity is the amount of water vapor in air, as a percentage of the maximum amount the air could hold at the same temperature. The other options refer to different concepts in weather science and chemistry.
Explanation:The amount of water vapor in the air, compared to the maximum amount that can be held at a specific air temperature is called Relative Humidity. This term is a measure used in weather science to describe the percentage of moisture in the air in relation to the maximum amount the air could hold at the same temperature.
For example, if the Relative Humidity is 50%, it means that the air is carrying 50% of the total moisture it could hold at that particular temperature.
Other options like Dew Point, Precipitation, and Crystallization refer to different concepts. Dew Point is the temperature at which the air is saturated and water vapor begins to condense into dew. Precipitation is any form of water particles, liquid or solid, that fall from the atmosphere and reach the ground. Crystallization is a process in chemistry involving the formation of solid crystals from a homogeneous solution.
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on a temperature versus time graph, how does the temperature at the beginning of a change is state compare with the temperature at the end of the change
Answer:
The temperature will remain the same.
Explanation:
When a material goes through a change of state, the temperature remains the same as witnessed on a temperature versus the time graph. Each change of state, that is, condensation, evaporation, melting, and fusion needs the withdrawal or supplementation of energy called latent heat. At the point of a change of state, there is no change in temperature. Though, in between the changes of states, the modifications in temperatures are brought about by the sensible heat.