Answer is: the nucleus of a helium atom.
Alpha particle is nucleus of a helium-4 atom, which is made of two protons and two neutrons.
For example, nuclear reaction:
²³⁴U → ²³⁰X + α (alpha particle).
Alpha decay is radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and transforms into an atom with an atomic number that is reduced by two and mass number that is reduced by four.
a helium nucleus emitted by some radioactive substances, originally regarded as a ray.
Of the following elements, which one would have the smallest ionization energy ?
A. Nitrogen
B. Neon
C. Boron
D. Lithium
D. Lithium or Li has the smallest ionization energy of those listed with an energy of 5,3917.
I hope that helps u!
Lithium (Li) has the smallest ionization energy out of the given elements due to its single valence electron and relatively small nuclear charge, which makes it easier to remove an electron compared to Boron (B), Nitrogen (N), and especially Neon (Ne).
The element with the smallest ionization energy among Nitrogen (N), Neon (Ne), Boron (B), and Lithium (Li) is Lithium (Li). Ionization energy is the energy required to remove an electron from an atom in the gaseous state. Generally, ionization energy decreases as we move down a group in the periodic table because the outermost electron is farther from the nucleus and feels less nuclear attraction. Lithium, being in the first group and the second period of the periodic table, has only a single electron in its outer shell and a smaller nuclear charge compared to the other listed elements, making it easier to remove this electron. In comparison, Neon (Ne), as a noble gas, has a complete valence shell and a larger nuclear charge, resulting in a much higher ionization energy. Boron (B), while higher in ionization energy compared to Lithium, has lower ionization energy than Nitrogen due to having fewer electrons in its valence shell. Nitrogen (N) has a half-filled p subshell, which is relatively stable, raising its ionization energy higher than that of Boron.
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.
For the following chemical reaction, how many moles of hydrogen (H2) will be produced from 2.0 mol of aluminum (Al)? 2Al+3H2SO2⟶3H2+Al2(SO2)3
In the given chemical reaction, 3.0 moles of hydrogen will be produced from 2.0 moles of aluminum.
Explanation:In the given chemical reaction:
2Al + 3H2SO2 ⟶ 3H2 + Al2(SO2)3
We can see that 2 moles of aluminum (Al) react to produce 3 moles of hydrogen (H2). Therefore, if we start with 2.0 mol of aluminum, we can calculate the moles of hydrogen produced as follows:
2.0 mol Al x (3 mol H2 / 2 mol Al) = 3.0 mol H2
So, 3.0 moles of hydrogen will be produced from 2.0 moles of aluminum.
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For the chemical reaction 2Al + 3H₂SO₄ rightarrow Al₂(SO₄)₃ + 3H₂, 2.0 moles of aluminum will produce 3 moles of hydrogen gas.
Moles of hydrogen (H₂) will be produced from 2.0 mol of aluminum (Al) in the reaction with sulfuric acid. According to the balanced chemical equation 2Al + 3H₂SO₄ rightarrowAl₂(SO₄)₃ + 3H₂, 2 moles of aluminum produce 3 moles of hydrogen gas.
Using stoichiometry, we can set up a ratio from the coefficients in the balanced equation: 2 moles of Al : 3 moles of H₂. Therefore, if we start with 2.0 moles of Al, we will produce 3 moles of H₂.
Here's the calculation:
(2.0 moles Al)*(3 moles H₂ / 2 moles Al) = 3 moles H₂.
How many electrons are in a neutral atom of lithium
Answer:
Lithium has an atomic number Z of 3, so by definition, it has 3 protons. Hence, neutral lithium atoms must contain 3 electrons.
Explanation:
A neutral atom of lithium contains 3 electrons.
The number of electrons in a neutral atom is equal to its atomic number. The atomic number of an element represents the number of protons in its nucleus, and since atoms are electrically neutral (having no net charge), the number of electrons in the atom is also equal to the number of protons.
For lithium (Li), you can find its atomic number on the periodic table, which is 3. This means that lithium has 3 protons in its nucleus, and therefore, it also has 3 electrons to balance the positive charge of the protons. In a neutral atom, the number of electrons equals the number of protons, making lithium, with its 3 electrons, an electrically neutral atom.
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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:
Help!!! I need ur help! If u help me I’m going to be so happy. The question is so tricky for me and I don’t know it. If u help me I’m going to be so thankful. ( if that makes sense )
I take that the insects remain constant no matter what happens to the frogs (which the frogs eat presumably). So a constant food supply for the frogs is not the problem.
The line for the alligators increases over time. It their numbers increase, the frogs are in trouble. The alligators will pursue lunch with determined single mindedness and there are more of them around.
So the frogs should decrease. Their natural enemy is the alligator and alligators won't go after insects. It's not worth their time.
A is the only answer you can choose.
Ammonia is produced by the following reaction. 3H2(g) + N2(g)
2NH3(g) When 7.00 g of hydrogen react with 70.0 g of nitrogen, hydrogen is considered the limiting reactant because
Answer:
The hydrogen produces the smaller amount of ammonia.
Step-by-step explanation:
We are given the masses of two reactants, so this is a limiting reactant problem.
We know we will need a balanced equation with masses and molar masses, so let’s gather all the information in one place.
M_r: 28.02 2.016 17.03
N₂ + 3H₂ ⟶ 2NH₃
Mass/g: 70.0 7.00
1. Calculate the moles of N₂ and H₂
Moles N₂ = 70.0 × 1/28.02
Moles N₂ = 2.498 mol N₂
Moles H₂ = 7.00 × 2.016
Moles H₂ = 3.472 mol N₂
=====
2. Calculate the moles of NH₃ from each reactant
From N₂:
The molar ratio is 2 mol NH₃/1 mol N₂
Moles of NH₃ = 2.498 × 2/1
Moles of NH₃ = 4.996 mol NH₃
From H₂:
The molar ratio is 2 mol NH₃/3 mol H₂
Moles of NH₃ = 3.472 × 2/3
Moles of NH₃ = 4.139 mol NH₃
======
3. Identify the limiting reactant
The limiting reactant is H₂, because it produces fewer moles of NH₃.
what causes water to become too basic alkaline and why
Carbon Dioxide is the most common reason water becomes full of alkaline. Hopefully I could help :)
Since electrons ___ each other, electrons pairs will be as _____ apart as possible
We have to answer based on basic concept on electron.
The correct answer is: Since electrons repel each other, electrons pairs will be as far apart as possible.
We know, electrons are negatively charged particles and negatively charged particles repel to each other.
When electrons which are of similar charge repel each other, they go far apart from each other..
Which of these elements elements has an electron configuration of [Kr]5s2
Your answer is strontium
In this reaction, what roll does the lead (II) nitrate play when 50.0 mL of 0.100M iron (III) chloride are mixed with 50.0 mL of 0.100M lead (II) nitrate?
Answer: The roll of lead (II) nitrate is that it is a limiting reactant of the reaction.
Solution : Given,
Molarity of [tex]FeCl_3[/tex] = 0.1 M
Volume of [tex]FeCl_3[/tex] = 50.0 ml = 0.05 L (1 L = 1000 ml)
Molarity of [tex]Pb(NO_3)_2[/tex] = 0.1 M
Volume of [tex]Pb(NO_3)_2[/tex] = 50.0 ml = 0.05 L
First we have to calculate the moles of [tex]FeCl_3[/tex] and [tex]Pb(NO_3)_2[/tex].
[tex]\text{ Moles of }FeCl_3=\text{ Molarity}\times \text{ Volume in L}[/tex]
[tex]\text{ Moles of }FeCl_3=(0.100M)\times (0.05L)=0.005moles[/tex]
[tex]\text{ Moles of }Pb(NO_3)_2=\text{ Molarity}\times \text{ Volume in L}[/tex]
[tex]\text{ Moles of }Pb(NO_3)_2=(0.100M)\times (0.05L)=0.005moles[/tex]
The balanced chemical reaction is,
[tex]2FeCl_3+3Pb(NO_3)_2\rightarrow 2Fe(NO_3)_3+3PbCl_2[/tex]
From the balanced chemical equation, we conclude that
3 moles of lead nitrate react with 2 moles of ferric chloride.
Thus 0.005 moles of lead nitrate react with [tex]=\frac{2}{3}\times 0.005=0.0033[/tex] moles of ferric chloride.
Moles of ferric chloride will be left unreacted = 0.005 - 0.0033 =0.0017 moles
Limiting reagent is the reagent in the reaction which limits the formation of product.
Excess reagent is the reagent in the reaction which is in excess and thus remains unreacted.
Therefore, in the given reaction, lead nitrate is the limiting reagent and ferric chloride is the excess reagent.
Answer: iron (III) chloride is the excess reactant in the reaction.
Explanation:
i just did the assignment
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.
is this equation balanced and in the lowest form?
4NH3—> 2N2+6H2
the right equation is 2NH3 -> N2+3H2
Answer:
No, it is:
[tex]2NH_3\rightarrow N_2+3H_2[/tex]
Explanation:
Hello,
In this case, all the given equation could be simplified by a factor of two to yield:
[tex]\frac{4}{2} NH_3 \rightarrow \frac{2}{2} N_2+\frac{6}{2} H_2[/tex]
Therefore, the answer is no, so it the lowest one is:
[tex]2NH_3\rightarrow N_2+3H_2[/tex]
Regards.
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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What is the solar mass of CHCI3?
Molar mass of CHCl3 is
sum of atomic mass of all the atoms in it.
= C + H + 3 Cl
= 12.0107 + 1.008 + 3 (35.453) = 2.0107 + 1.008 + 106.359
= 119.38 g/mol
Molar mass of CHCl3 is 119.38 g/mol
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.
Which hybridization of orbitals is present in beryllium fluoride, BeF2?
Answer is: beryllium fluoride has sp hybridization.
Beryllium (Be) is metal from group 2 and fluorine (F) is nonmetal from group 17.
Electron configuration of beryllium atom: ₄Be: 1s² 2s².
Electron configuration of fluorine atom: ₉F 1s² 2s² 2p⁵.
In beryllium, one electron from 2s orbital gets excitted to the level of 2p orbital; s and p orbital are hybridized and form two sp-hybridised orbitals arranged in a linear shape.
Two fluorine atoms come closer to beryllium atom and sp hybridised orbitals of Be and p orbital of F get overlapped with each other and make bonds.
The hybridization of orbitals in beryllium fluoride (BeF2) is sp hybridization, resulting in a linear molecular geometry with a bond angle of 180 degrees due to the two sp hybrid orbitals formed from the 2s and 2p orbitals of beryllium.
Explanation:The hybridization of orbitals in beryllium fluoride, BeF2, is sp hybridization. Beryllium in its ground state has a 1s22s2 electron configuration, and to form bonds, one of the 2s electrons is promoted to the empty 2p orbital. After this, the 2s and one of the 2p orbitals hybridize to form two new orbitals that are identical in energy and shape, which are called sp hybrid orbitals. These hybrid orbitals in BeF2 ensure the molecule has a linear structure with a bond angle of 180 degrees.
A Lewis structure of BeF2 shows a beryllium atom with two single bonds to two fluorine atoms, each having three lone pairs of electrons. The linear geometry of BeF2 is maintained because of the two sp hybrid orbitals pointing in opposite directions away from the central beryllium atom to form bonds with the fluorine atoms.
when is a hurricane nears land, causes the most damage?
The most damage from a hurricane typically occurs when it makes landfall.
When a hurricane nears land, several factors contribute to the potential damage it can cause:
Wind Speed: As a hurricane moves onto land, its sustained winds can cause structural damage to buildings, infrastructure, and vegetation. The wind speed at landfall is a crucial factor in determining the extent of the damage.
Storm Surge: Hurricanes generate a significant storm surge, which is the abnormal rise in seawater levels along the coast. This surge, combined with the normal tides, can inundate coastal areas, causing flooding and erosion.
Rainfall: Hurricanes produce heavy rainfall, leading to widespread flooding, particularly in low-lying areas and regions with inadequate drainage systems.
Tornadoes: Hurricanes can spawn tornadoes, which can cause localized destruction within the storm's path.
To estimate the potential damage caused by a hurricane, meteorologists and disaster management agencies consider these factors along with the hurricane's intensity, forward speed, and the population density of the affected areas.
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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how Africa's bedrock can have glacier scratches
Means that the African continent was once in the higher latitudes, and in contact with Antarctica, where glaciers form due to the low temperatures in the poles. The continent drifted over time due to tectonic plate movement. Continental drift is powered by the convection current in the mantle of the earth.
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.
Count the number of molecules in the diagram of water formation given in the lesson to complete the following reaction.
______H2 + ________O2 → _______H2O
A: 1
B: 2
C: 3
The answer is 2
2H2 + 2O2 -2H2O
2 H2 + 1 O2 = 2 H2O
B. 2 is the correct option
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
What is the balanced equation for the combustion of magnesium?
A. Mg (s) +O2 (g) >MgO(g)
B. Mg (s) +O2 (g) >MgO2(g)
C. 2 Mg (s) + O2 (g) > 2 MgO (s)
D. Mg (s) + 2 O2 (g) > MgO4^2- (aq)
option a
mg atomic number is 12
the electronic configuration is 2, 8, 2
Oxygen atomic number is 8
the electronic configuration is 2,7
the magnesium will try to give away 2 electron to get to the form of noble gas configuration, hence oxygen needs one more to get to noble gas hence it will take two elements of oxygen to form MgO.
Help ASAP!
Which of the following represents the average kinetic energy of an object’s particles?
A.) Potential energy
B.) Thermal energy
C.) Type of atoms in matter
D.) Type of molecules in matter
I believe the answer is D
The average kinetic energy of an object's particles is represented by the Thermal Energy. It is a measure of how fast the particles within an object are moving. Therefore the more thermal energy an object has, the higher the average kinetic energy of its particles.
Explanation:The average kinetic energy of an object's particles is represented by Thermal Energy. Kinetic energy is the energy of motion. For a single particle, it is given by the formula 1/2 mv^2 where m is the mass and v is the velocity of the particle. When we talk about particles in an object, the average kinetic energy of all these moving particles is referred to as the thermal energy.
The more thermal energy an object has, the faster its particles are moving and therefore the higher the average kinetic energy of its particles.
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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.
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
Sodium metal reacts with water to produce hydrogen gas.
What best describes this reaction?
A•A single replacement reaction takes place because sodium is less reactive than hydroxide ions.
B•A double replacement reaction takes place because sodium is less reactive than hydroxide ions.
C•A double replacement reaction takes place because sodium is more reactive than hydrogen.
D•A single replacement reaction takes place because sodium is more reactive than hydrogen.
Question 2(Multiple Choice Worth 4 points)
(04.03 MC)
The table shows the nature of reactants and products formed in a certain type of chemical reaction.
Nature of Reactants and Products
Reactants Products
Metal + Ionic compound Metal + Ionic compound
Which of the following is true about the type of chemical reaction?
A•It is a single replacement reaction, and the anions in the two ionic compounds are different.
B•It is a single replacement reaction, and the cations in the two ionic compounds are different.
C•It is a double replacement reaction, and the anions in the two ionic compounds are different.
D•It is a double replacement reaction, and the cations in the two ionic compounds are different.
Question 3(Multiple Choice Worth 4 points)
(04.03 LC)
Which of the following is a single replacement reaction?
A• Ba(OH)2 + H2SO4 → BaSO4 + 2H2O
B• 2Mg + O2 → 2MgO
C• H2O+ CO2 → H2CO3
D• Zn + H2SO4 → ZnSO4 + H2
Question 4 (True/False Worth 2 points)
(04.03 LC)
When CaCl2 and Zn react together, zinc (Zn) can replace chlorine (Cl) in the compound because zinc is higher on the periodic table.
True
False
Question 5 (True/False Worth 2 points)
(04.03 LC)
A double replacement reaction is a reaction in which one element replaces a similar element within a compound.
True
False
Question 6(Multiple Choice Worth 4 points)
(04.03 MC)
Which of the following equations has the correct products and is balanced correctly for a reaction between Na3PO4 and KOH?
A• Na3PO4 + 3KOH → 3NaOH + K3PO4, because K retains the same charge throughout the reaction
B• Na3PO4 + KOH → Na3OH + KPO4, because K increases in charge from 1+ to 3+ when it is replaced
C• Na3PO4 + KOH → 3NaOH + K3PO4, because K retains the same charge throughout the reaction
D• Na3PO4 + KOH → Na3OH + K3PO4, because K increases in charge from 1+ to 3+ when it is replaced
Answer:
Q1. D) A single replacement reaction takes place because sodium is more reactive than hydrogen.
Explanation: [tex]2Na+2H_2O\rightarrow 2NaOH+H_2[/tex] Sodium metal reacts with water to givesodium hydroxide and hydrogen gas. A single replacement reaction takes place because sodium is more reactive than hydrogen.
Sodium easily lose electrons than hydrogen and get oxidized to [tex]Na^+[/tex] and [tex]H^+[/tex] get reduced to give [tex]H_2[/tex] .
Q2. B) It is a single replacement reaction, and the cations in the two ionic compounds are different.
Explanation: [tex]3Na+AlCl_3\rightarrow 3NaCl+Al[/tex] where Sodium is a metal and [tex]AlCl_3[/tex] is an ionic compound. Na being more reactive than Al, displaces it from its salt solution.
Q3. D) [tex]Zn+H_2SO_4\rightarrow ZnSO_4+H_2[/tex]
Explanation: A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution.Thus zinc can easily lose electrons as compared to hydrogen and result in the formation of zinc sulfate and hydrogen.
Q4. False
[tex]Zn+CaCl_2\rightarrow[/tex]no reaction
Explanation: As zinc lies lower in reactivity series, it is less reactive than calcium. It will not be able to displace calcium from its salt and hence no reaction occur. Thus the given statement is false.
Q5. False
Explanation: A double displacement reaction is one in which exchange of ions take place. Thus an element replaces another element and not same element.
A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution. Thus one element should be different from another element.
Q6. A)[tex]Na_3PO_4+3KOH\rightarrow 3NaOH+K_3PO_4[/tex], because K retains the same charge throughout the reaction
Explanation: A balanced chemical reaction is one in which the number of atoms on both sides of a chemical equation are same. Also K has an oxidation state or charge of +1 in [tex]KOH[/tex] as well as [tex]K_3PO_4[/tex]
Answer:
Q1: A single replacement reaction takes place because sodium is more reactive than hydrogen.
Explanation:
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.
If a wave has a wavelength of 9 meters and a period of 0.006, what is the velocity of the wave ?
Answer:
1500 m/s
Step-by-step explanation:
The formula for the period T of a wave is
T = 1/f Invert each side
(1) f = 1/T
The formula relating frequency f and wavelength λ is
(2) fλ = v Substitute (1) into (2)
v = λ/T
Data:
λ = 9 m; T = 0.006 s
Calculations:
v = 9/0.006
v = 1500 m/s