Answer:
The correct answer would be 3. The number of atoms of each element in the reactants equals the number of atoms of each element in the products.
Explanation:
The law of conservation of matter states that energy cannot be created or destroyed, only transfered. Thus, option 3 is correct.
I'm not entirely sure what this is in relation to but I will try my best: the hydrosphere (water), Geosphere (land) and atmosphere (air) (there's also the biosphere but that's just the living things on earth (plants and animals) but for now we will ignore this) are the three main "spheres"If one of the three main spheres are disrupted the others are also disrupted. think of it this way:
There's an earthquake on the sea floor from an underwater volcano which effects the geosphere and because of this earthquake there's a tsunami, and the volcano disrupts the air content adding things such as sulfur into the air.
so - a way you can shape the geosphere is by effecting one of the other spheres. ie. putting litter in streams.
I would say that this problem needs more information. Giving only the concentration would not specify anything since in general salts are neutral as they are from neutralization reactions. Specifying other properties of the compound would be more helpful.
The answer for the following problem is mentioned below.
- <em><u>Therefore the final moles of the gas is 12.8 moles</u></em>
- <em><u>Therefore the option is "D" (12.8 moles)</u></em>
Explanation:
Given:
Initial moles (
) = 7.51 moles
Initial volume (
) = 8.15 L
Final volume (
) = 13.9 L
To find:
Final moles of the gas
We know;
From the ideal gas equation;
P × V = n × R × T
where;
P represents the pressure of the gas
V represents the volume of the gas
n represents the no of moles of the gas
R represents the universal gas constant
T represents the temperature of the gas
we know;
from the above mentioned equation,
V ∝ n
So,
= ![\frac{n_{1} }{n_{2} }](https://tex.z-dn.net/?f=%5Cfrac%7Bn_%7B1%7D%20%7D%7Bn_%7B2%7D%20%7D)
where,
represents the initial volume
represents the final volume
represents the initial moles
represents the final moles
So,
= ![\frac{7.51}{n_{2} }](https://tex.z-dn.net/?f=%5Cfrac%7B7.51%7D%7Bn_%7B2%7D%20%7D)
= 12.8 moles
<em><u>Therefore the final moles of the gas is 12.8 moles</u></em>
Answer:
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