To prepare a 0.5 M sucrose solution with a volume of 600 cm³, you would need to dissolve 102.6 grams of sucrose.
Explanation:How to Calculate the Mass of Sucrose for a Semi Molar Solution
To prepare a semi molar solution, you first need to understand that "semi molar" implies a 0.5 molar concentration of the solute. Given that the molecular mass of sucrose is 342 g/mol, we can proceed with the calculations.
To prepare a 0.5 M solution, 0.5 moles of sucrose per liter of solution are needed. Since the density of a sucrose solution is not provided, we will assume the density of water for this example, which is 1 g/cm³, making 600 cm³ of solution equivalent to 600 mL or 0.6 L.
Now, we calculate the number of moles of sucrose required as follows:
Number of moles = Molarity × Volume in liters = 0.5 mol/L × 0.6 L = 0.3 moles of sucroseFinally, to find the mass of sucrose:
Mass of sucrose = Number of moles × Molar mass = 0.3 moles × 342 g/mol = 102.6 grams of sucroseTherefore, to prepare a semi molar (0.5 M) solution, you would need to dissolve 102.6 grams of sucrose in 600 cm³ of solution.
Final answer:
To make a 0.5 M sucrose solution with a volume of 600 cm³, 102.6 grams of sucrose, which has a molar mass of 342, must be dissolved.
Explanation:
The question is about finding the mass of sucrose needed to prepare a semi molar solution, assuming semi molar refers to 0.5 M (molar concentration). Since the molecular mass of sucrose is given as 342, to prepare 600 cm³ (which is equivalent to 0.6 L) of a 0.5 M solution, the number of moles needed will be 0.5 moles/L × 0.6 L = 0.3 moles of sucrose. To find the mass of sucrose, we will multiply the number of moles by the molar mass:
Mass of sucrose = Number of moles × Molar mass
= 0.3 moles × 342 g/mole
= 102.6 g
Therefore, to prepare the desired semi molar solution, 102.6 grams of sucrose should be dissolved in 600 cm³ of solution.
atom with the largest atomic radius in group 18
Answer:
Radon
Explanation:
Group eighteen elements are called noble gases. This group includes helium, neon, argon, krypton, xenon and radon.
Radon is present at the last of this column.
Atomic radii trend along group:
As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.
As the size of atom increases the ionization energy from top to bottom also decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.
Thus radon has largest atomic radius.
Answer:Rn =Radon
Explanation:
A reliable source is one that _____.
A. you found online
B. should be copied directly
C. does not need to be cited
D. can be trusted to be accurate
Would it be A or C???????? Helppp
Answer:
c
Explanation:
Answer:
A. One that is not a fossil fuel
Explanation:
"Alternative fuel" is a technical term used in the fuel industry. It refers to fuels that that are not fossil fuels (like coal, oil, and natural gas).
B. is wrong. A fuel that hasn't been developed yet is not of much use.
C. is wrong. A homeowner may consider wood as an alternative fuel in case there is no electricity to power an oil furnace, but that is not the technical meaning of the term.
D. is wrong. An alternative fuel should use renewable resources.
15 pts The drop down items have the same options for all sections labeled choose an item
#8
1)0.960 mol CH4
2)1 mol CH4
3)22.4 L CH4
#9
1)1 mol H2O
2)17.99 g H2O
3)2.0 mol H2O
#10
1)22.4 L CO2
2) 2.0 L CO2
3) 1 mol CO2
4)6.02 x 10 23molecules CO2
8) 21.504 liters of gas
9) 122.5 g
10) 6.022*10^23
Explanation:
8)
1 mole= 22.4 liters
to calculate the volume of gas of 0.960 moles of CH4
22.4*0.960/1
= 21.504 liters of gas
9)
2.0 mole*18.02 g/ 1 mole
=122.5 g
10)
2.0 l * 1 mole/22.4 l
6.022*10^23
an element x atomic number 3,relative atomic number 6.94 and consists of two isotopes of mass numbers 6 and 7 respectively.
What is the mass number of the more abudant isotope of x?
Answer:
7
Explanation:
Atomic number of X = 3
Atomic mass of X = 6.94 amu
1st isotope atomic mass = 6 amu
2nd isotope atomic mass = 7 amu
Which is more abundant isotope = ?
Explanation:
we know there are two naturally occurring isotopes of given element X, X-6 and X-7.
First of all we will set the fraction for both isotopes
x for the isotopes having mass 6
1-x for isotopes having mass 7
The average atomic mass of X = 6.94 amu
we will use the following equation,
6x + 7 (1-x) = 6.94
6x + 7 - 7x = 6.94
6x- 7x = 6.94 - 7
-1x = -0.06
x= -0.06/-1
x= 0.06
0.06 × 100 = 6%
6% is abundance of X-6 because we solve the fraction x.
now we will calculate the abundance of X-7.
(1-x)
1-0.06 =0.94
0.94 × 100= 94%
94% for X-7.
Question is attached below!
Answer:
263 g
Explanation:
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created not destroyed in a chemical equation.
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
Thus in given example the mass of reactant is 263 g therefore the mass of product would be 263 g.
Another example:
In given photosynthesis reaction:
6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂
there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass
what is the key principle behind VSEPR theory
Answer:
Minimizing repulsion by maximizing the bond angles
Explanation:
VSEPR is defined as 'valence shell electron pair repulsion' theory. The key principle is that repulsion of adjacent lone pairs of electrons or the electrons that are shared within a bond creates bond angles.
The bond angles are maximized in order to minimize the repulsion in the most stable geometrical shape of the molecule.
That said, in VSEPR theory we tend to achieve the greatest possible angles between the bonds and lone pair electrons in order to obtain the lowest repulsion between them.
what happens to the properties of substances during a chemical reaction?
Explanation:
In a chemical reaction, only the atoms present in the reactants can end up in the products. Also, In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
the T 1/2 of a certain radioisotope is 4 weeks what fraction of the original isotope remains after 12 weeks
Answer:
The fraction of original isotope remaining after 12 weeks is 1/8 (0.125)
Explanation:
The half life of the radio-isotope = 4 weeks =[tex]t_{\frac{1}{2}}[/tex]
After n half lives, the fraction of original isotope remaining = [tex]\frac{1}{2^{n}}[/tex]
In 12 weeks, the number of half lives = 12/4 = 3 half lives
The fraction of original isotope remaining = [tex]\frac{1}{2^{3}}=\frac{1}{8}[/tex]
Hence, after 12 weeks, fraction of original isotope remaining is 1/8 (0.125)
Which is the correct electron dot diagram for the element Lead (Pb)?
this will have ur answer
.
. pb .
.
Which shows the correct order of increasing trophic level, from producer to tertiary consumer?
Answer:
Grass, deer, wolf, fungi.
Explanation:
The tropical level of an organism is defined as the position of organism occupied in the food chain. The food chain is starts from tropical level one which is primary producers (such as plants), then move to herbivores (such as deer) in level two, carnivores, (such as wolf) at level three, apex predators in level four (such as lions), and it ends in decomposers such as fungi.
Fungi play important role in ecosystem to help in breakdown of dead organic matter and return nutrients to the soil. Without fungi nutrients cannot cycle in an ecosystem, and causing the breakdown of entire food web.
Which radioisotope is naturally occurring?
94238Pu
13H
96242Cm
103258Lr
Answer:
I think the answer is 13H
Explanation:
The best known example of a naturally-occurring radioisotope is uranium. All but 0.7 per cent of naturally-occurring uranium is uranium-238; the rest is the less stable, or more radioactive, uranium-235, which has three fewer neutrons in its nucleus.
Which of state of matter has no definite shape but does have a definite volume?
A. Liquid B. Gas C. Solid D. Element
ans is A liquid........
Answer:
A.Liquid has no definite shape but does have a definite volume.
Explanation:
Hope it helps
Bridges and automobiles are either painted or coated with zinc. Why is it not electroplated?
Final answer:
Zinc is used to protect bridges and automobiles from corrosion because it is more easily oxidized than iron, providing sacrificial protection. Electroplating is not commonly used because it results in a thinner and less durable zinc layer.
Explanation:
Zinc is often used to protect bridges and automobiles from corrosion because it is more easily oxidized than iron. This means that even if the zinc coating gets scratched, the zinc will still oxidize before the iron, providing a sacrificial protection. While electroplating could be an option, it is not commonly used because it results in a thinner and less durable zinc layer compared to other coating methods.
Two basic properties of the gas phase are
Select all the correct answers.
Which natural methods remove CO2 from the atmosphere?
respiration of living organisms
photosynthesis by plants
evaporation of ocean water
absorption of CO2 from the atmosphere by ocean water
melting of glacial ice
Answer:
The natural method of removal of CO2 is
Photosynthesis by plants
Absorption of CO2 from the atmosphere by ocean water
Melting of glacial ice
Explanation:
Respiration of living organism : In this process, Oxygen is consumed(removed) and Carbon dioxide(CO2 ) is formed.So it forms CO2 .
Photosynthesis by plants: Green plant containing. prepare their food in presence of sunlight by using CO2 , water ,Hence CO2 is removed from atmosphere.
Evaporation of ocean water : It increases the level of CO2 in atmosphere. The heating of oceans surface Degassed CO2 to atmosphere.
Absorption of CO2 from the atmosphere by ocean water : the plants under the oceans needs CO2 to carry out photosynthesis .Hence oceans absorbs CO2 from atmosphere .Here, CO2 is removed from atmosphere.
Melting of glacial ice : Glacial ice absorb carbon dioxide because it does not have organism respiration (organisms releasing CO2 ).They capture large amount of CO2 and called CO2 sinks.(Remove CO2)
Answer:photosynthesis by plants
absorption of CO2 from the atmosphere by ocean water
Explanation:
Photosynthesis involves the combination of CO2 with water to form glucose and subsequently complex carbohydrates. Plants constitute a very important sink for carbon IV oxide in nature. Secondly, oceans absorb carbon IV oxide to maintain the concentration of bicarbonate in the water. These are two important natural methods that remove CO2 from the environment.
Which of these statements is correct about P and S seismic waves? (2 points) Question 40 options: 1) Both P and S waves travel along Earth's surface and their amplitude decreases with depth into Earth. 2) Both P and S waves travel with the same speed through Earth and their amplitude increases with time. 3) P waves are radiated along a single direction but S waves are radiated along all directions. 4) P waves change the volume of the medium through which they travel but S waves do not change the volume of the medium
Answer:
3
Explanation:
Primary waves are radiated along a single direction, but secondary waves are radiated along all directions. That is why the P waves can take place in almost all mediums such as solid, liquid and air, unlike the S waves that are transverse and only travel through solid mediums
I NEED HELP ASAP!!! Find the mass of each substance. Show your work.
A. 7.00 mil H202
B. 5.60 mol NaOH
Answer:
A: 238 g
B: 224 g
Explanation:
Data given:
A.
number of moles of H₂O₂ = 7.00 mole
mass of H₂O₂ = ?
B.
number of moles of NaOH = 5.60 mole
mass of NaOH = ?
Solution:
Part A:
Formula will be used
no. of moles = mass in grams / molar mass
As we have to calculate mass of substance
So, rearrange the above equation
mass in grams = no. of moles x molar mass . . . . . . (1)
Molar Mass of H₂O₂ = 2(1) + 2(16)
Molar Mass of H₂O₂ = 2 + 32
Molar Mass of H₂O₂ = 34 g/mol
Put values in equation 1
mass in grams = 7.00 mol x 34 g/mol
mass in grams = 238 g
mass of H₂O₂ = 238 g
_______________________
Part B:
Formula will be used
no. of moles = mass in grams / molar mass
As we have to calculate mass of substance
So, rearrange the above equation
mass in grams = no. of moles x molar mass . . . . . . (1)
Molar Mass of NaOH = 23 + 16 + 1
Molar Mass of NaOH = 40 g/mol
Put values in equation 1
mass in grams = 5.60 mol x 40 g/mol
mass in grams = 224 g
mass of NaOH = 224 g
A sample of wood from the remains of a ship was found to contain 40.0% of C-14 as of ordinary wood found now. If the half-life period of C 14 is 5770 years, find the number of years elapsed. (Round your answer to the nearest whole number)
Answer:
7628 y
Explanation:
Carbon-14 is radioactive and it follows the first-order kinetics for a radioactive decay. The first-order kinetics may be described by the following integrated rate law:
[tex]ln(\frac{[A]_t}{[A]_o})=-kt[/tex]
Here:
[tex][A]_t[/tex] is the mass, moles, molarity or percentage of the material left at some time of interest t;
[tex][A]_o[/tex] is the mass, moles, molarity or percentage of the material initially, we know that initially we expect to have 100 % of carbon-14 before it starts to decay;
[tex]k = \frac{ln(2)}{T_{\frac{1}{2}}}[/tex] is the rate constant;
[tex]t[/tex] is time.
The equation becomes:
[tex]ln(\frac{[A]_t}{[A]_o})=-\frac{ln(2)}{T_{\frac{1}{2}}}t[/tex]
Given:
[tex]\frac{[A]_t}{[A]_o} = \frac{40.0 %}{100.0 %}[/tex]
[tex]T_{\frac{1}{2}} = 5770 y[/tex]
Solve for time:
[tex]t = -\frac{ln(\frac{[A]_t}{[A]_o})\cdot T_{\frac{1}{2}}}{ln(2)}[/tex]
In this case:
[tex]t = -\frac{ln(\frac{40.0\%}{100.0\%})\cdot 5770 y}{ln(2)}[/tex]
[tex]t = 7628 y[/tex]
Which element has 7 valence electrons
Answer:
Halogens have 7 valence electrons.
Explanation:
They are the most active non-metals including fluorine, chlorine, bromine, iodine, and astatine
Science Chemical compound formula
Answer:
NaCl (common salt)
Explanation:
it is called sodium chloride
A chemical formula is a symbolic representation of a compound's composition. It uses element symbols and subscripts to denote the types of atoms present and their quantities. The formula H₂O represents water, while H₂SO₄ represents sulfuric acid, with N₂O₃ being the formula for dinitrogen trioxide.
A chemical formula represents a substance using symbols for its constituent elements and subscripts to show the number of atoms of each element in the compound. For example, the compound water has a chemical formula of H₂O, indicating it contains two hydrogen atoms and one oxygen atom. Another example is sulfuric acid, a widely produced chemical with a formula of H₂SO₄, showing it is composed of two hydrogen atoms, one sulfur atom, and four oxygen atoms. The naming convention for covalent compounds like dinitrogen trioxide involves using prefixes to denote the number of each type of atom present; thus, N₂O₃ denotes two nitrogen atoms and three oxygen atoms.
PLEASE HELP ASAP!! Needed IN 10 MINUTES!!
Which statement best describes how genetic information is passed to the offspring of Astrammina rara?
A. Half of the genetic information comes from one parent.
B. The genetic information comes from the egg.
C. All of the genetic information comes from one parent.
D. The genetic information comes from the sperm.
Answer:
The correct option is C) All of the genetic information comes from one parent.
Explanation:
The description in the paragraph tells that Astrammina rara are unicellular organisms and their offspring born are identical to the parent cell.
Asexual reproduction can be described as a method of reproduction in which a parent cells produces two offsprings which are identical to the parent cell. Asexual reproduction is the common mode of reproduction in unicellular organisms.
Hence, the description shows that Astrammina rara reproduce by this method and hence all of the information will arise from one, single parent.
Read "The Ozone Hole" and answer the question below.
Use examples from the article to explain one positive and one negative effect that chemistry has had on society.
Answer:
Positive effect - allow the search and development of environmental friendly sources, to decrease the risk of polluents in the ozone (in the world).
Negative effect - environmental imbalances like: toxic gas leaks, river and soil contamination, etc.
Explanation:
Ozone (O3) is one of the gases that make up the atmosphere and about 90% of its molecules are concentrated between 20 and 35 km altitude, called the Ozone Layer. Its importance is that it is the only gas that filters out type B ultraviolet radiation (UV-B), which is harmful to living beings.
Ozone has different functions in the atmosphere depending on its altitude. In the stratosphere, ozone is created when solar ultraviolet radiation interacts with the oxygen molecule, breaking it into two oxygen atoms (O). The released oxygen atom attaches itself to an oxygen molecule (O2), thus forming ozone (O3). In the stratospheric region, 90% of type B ultraviolet radiation is absorbed by ozone. At ground level in the troposphere, ozone loses its protective function and becomes a polluting gas, responsible for increasing surface temperature, together with carbon monoxide (CO), carbon dioxide (CO2), methane (CH4) and nitrous oxide.
Several chemicals are destroying ozone. By reacting with it, the nitric and nitrous oxides expelled from vehicles and the CO2 produced by burning fossil fuels such as coal and oil are destroying the protective layer of the planet, opening holes in it.
To reduce gas emissions, chemical professionals have been studying in depth the substitution of fossil energy, which generates a lot of pollution, by the so-called renewable energy. Other example can be the electric car, which is environmentally friendly because it does not emit polluting gases, is already a reality, sold in many countries. So, this a positive effect of chemistry nowadays, which it can allow the search for environmental friendly sources, to decrease the risk of polluents.
But associated with progress, we have a multitude of environmental imbalances. Toxic gas leaks, river and soil contamination and poisoning by ingestion of contaminated food are problems shown daily - these could be some negative effects of chemistry nowadays.
Answer:
The benefits of CFCs include their use as coolants.
CFCs can be used as foaming agents and fire extinguishers.
CFCs, when released into the atmosphere, destroy ozone in the stratosphere.
CFCs destroy ozone in the stratosphere, which is the chemical layer that shields living things from too much ultraviolet radiation from the sun.
How can Newton’s laws be experimentally verified?
Answer:
Newton's second law of motion is F = ma, or force is equal to mass times acceleration. Learn how to use the formula to calculate acceleration
Explanation:
Answer:
Newton's laws can be experimentally verified because Newton's second law of motion is F = ma, or force is equal to mass times acceleration. Learn how to use the formula to calculate the acceleration. And so, using the equations and formulas we can use them and verify the laws.
Explanation:
good luck yalls ;P
when do d orbitals start getting filled
Answer & Explanation:
D orbitals begin filling with electrons after the orbital found in the 4s sublevel is filled. This occurs because the d sublevel is first found in the.
Answer:
Interesting question.
Explanation:
D orbitals begin filling with electrons after the orbital found in the 4s sublevel is filled.
Have a good day
please help with chemistry work
Answer:
Explanation:
14:
a) Shared pairs = 6
per shared pair between each C-H bond.
and two shared pair between C=C thus total shared pairs are 6
a) Lone pairs = 0
b) Single bonds = 4
Double bonds = 1
Triple bonds = 0
c) Formula = C₂H₄
Name = Ethene
d) Lewis structure = given structure is also Lewis structure.
13:
a) Shared pairs = 3
a) Lone pairs = 2
b) Single bonds = 0
Double bonds = 0
Triple bonds = 1
c) Formula = N₂
Name = Dinitrogen
d) Lewis structure = given structure is also Lewis structure.
Casey remembers that molecular motion increases as temperature increases. Identify what effect increased molecular motion.
A) Increasing the molecular motion reduces the solubility.
B) Increasing the molecular motion decreases the reaction rate
C) Increasing the molecular motion divides the activation energy
D) Increasing the molecular motion increases collision frequency.
D
Molecular motion increases as temperature increases and therefore increasing the molecular motion increases collision frequency.
Explanation:
When a substance is heated, its molecules gain increased kinetic energy even as the substance increases in temperatures. With higher kinetic energy, this means the molecules are moving more rapidly and hence collision between the molecules will be more frequent and of higher energy. It is these high energy collisions that cause the molecules to move further away from each other with increased temperatures (why substances expand).
Learn More:
For more on relationship between temperatures and molecular motion check out;
https://brainly.com/question/11659700
https://brainly.com/question/874953
https://brainly.com/question/2731193
https://brainly.com/question/2731193
https://brainly.com/question/2257506
#LearnWithBrainly
Answer: Your answer would be D
Explanation: This is because whenever the collision increases the molecular motion increases with it.
1. What is the density of a 20 gram of 40 ml liquid?
2. Which liquid would be on top one when one liquid has a density of 1.0
g/cm or .88 g/cm'?
3. Why is the solid phase denser than liquids or gases?
4. How can you witness
5. Balance this equation: H+ = H2O
6. What is the ratio of OH-to H+ in water?
7. What safety equipment should you wear for chemicals?
8. What should you do if chemicals get in your eye during lab?
9. List facts about each of the element group families from 1-18
10. List the ways that matter is measured
11. Define condensation
12. State the kinetic theory of particle movement
Answer:
1. [tex]0.5 g/mL[/tex]
2. [tex]0.88 g/cm^3[/tex]
3. It has the greatest mass to volume ratio
4. Incomplete
5. [tex]H^+ (aq)+OH^-(aq)\rightleftharpoons H_2O (l)[/tex]
6. 1
7. Gloves, goggles, coat, mask
8. Flush with tap water for at least 15 minutes
9. The facts are listed below
10. Mass and volume
12. All matter consists of moving particles, the degree of their movement is directly proportional to their kinetic energy
Explanation:
1. In order to solve for density, we should know that density is the ratio between mass and volume of a liquid. In this case, we're given both measures: given mass of m = 20 g and volume of V = 40 mL, we may simply apply the equation of density described here:
[tex]d=\frac{m}{V}[/tex]
Substituting the variables, we obtain:
[tex]d=\frac{m}{V}=\frac{20 g}{40 mL}=0.5 g/mL[/tex]
2. Given a mixture of several liquids, it's important to understand that liquids with a greater density will tend to form a bottom layer of a solution, while liquids with a lower density will tend to form a top layer of a solution. Here we have a liquid with a density of [tex]d_1 = 1.0 g/cm^3[/tex] and another liquid with a density of [tex]d_2 = 0.88 g/cm^3[/tex]. Notice that [tex]d_1[/tex] > [tex]d_2[/tex].
This implies that the liquid with a density of [tex]0.88 g/cm^3[/tex] would be on top, as its density is lower than the density of the other liquid with a density of [tex]1.0 g/cm^3[/tex].
3. The solid phase is not always, but typically denser than liquids or gases. There are some exceptions to this rule, for example, ice, a solid phase of water, is less dense than liquid water.
However, for the majority of cases this statement is true. Remember that solid phases are the most ordered phases with atoms being packed closely to each other. In liquids, atoms are more dispersed with distances between them being greater than those in solids. Similarly, gases have the greatest distances between gas atoms among all three phases.
Since density is directly proportional to mass, let's say we take the same volume of a solid, a liquid and a gas. For the same volume, since we'll have a greater number of solid atoms than for a liquid or a gas (because solid atoms are more closely packed with lower average distances between the atoms), the mass to volume ratio will be the greatest for solids.
4. This seems to be an incomplete question.
5. In order to balance the following ionic equation, we need to follow the mass and charge balancing rules. Firstly, expand a water molecule showing the individual parts of it:
[tex]H-OH[/tex]
Secondly, notice that we need to add a hydroxide anion to the proton, so that we obtain the same number of protons and hydroxide anions on the left side, as well as the number of hydrogen and oxygen atoms on the right. This way, the net charge on the left hand side (0) and the net charge on the right hand side (0) are equal, so the charge is balanced as well. We obtain:
[tex]H^+ (aq)+OH^-(aq)\rightleftharpoons H_2O (l)[/tex]
6. We should be familiar with the ionization constant of water in the context of this problem. It is defined as the product between the hydronium ions and hydroxide ions and is a constant number at some given temperature. For pure water, the concentration of hydronium ions is balanced by the concentration of hydroxide anions to yield a neutral pH value, meaning the ratio of one with respect to the other would be 1.
For example, at room temperature, the ionization constant of water is defined as:
[tex]K_w=[H^+][OH^-]=10^{-14}[/tex]
Since we have pure water:
[tex][H^+]=[OH^-]=\sqrt{10^{-14}}=10^{-7}[/tex]
Then the ratio is:
[tex]\frac{[H^+]}{[OH^-]}=\frac{10^{-7}}{10^{-7}}=1
7 to 12. The questions are explained in the file attached.
How could government laws have the most direct impact on water quality?
provide rewards to recycle
provide rewards to use solar power
provide rewards to use liquid-absorbing surfaces
Answer:
provide rewards to use solar power
Explanation:
Using solar power we can avoid bad energy like Coal, oil, natural gas, uranium and water from a dam.
All these kinds of energy producing air pollution, water pollution, or greenhouse gases.
But solar power has some toxic materials, also, using a lot of water to keep and clean solar power. In addition, if we create a solar power near a river or lake may cause damage.
We must think in these factors before to do a solar power.
If 325 g of ammonia is used, what amount, in moles, of nitrogen monoxide will be produced in the
following equation: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)?
Answer:
19.12 moles of NO will produced.
Explanation:
Given data:
Mass of ammonia = 325 g
Moles of NO produced = ?
Solution:
Chemical equation:
4NH₃ + 5O₂ → 4NO + 6H₂O
Number of moles of Ammonia:
Number of moles = mass/ molar mass
Number of moles = 325 g/ 17 g/mol
Number of moles = 19.12 mol
Now we will compare the moles of ammonia and NO.
NH₃ : NO
4 : 4
19.12 : 19.12
Thus 19.12 moles of NO will produced.