Answer:
Cu + HNO3 → Cu(NO3)2 + <u>H2O</u> + <u>NO2</u>
Cu + 4HNO3 → Cu(NO3)2 + <u>2H2O</u> + <u>2NO2 </u>(balanced equation)
Answer:
the answer is god
Explanation:
because god created everything therefore hes the answer to everything
Answer:
Molar mass of N + 3 ×molar mass of H
Explanation:
The molar mass of a compound is calculated by adding the total mass of the individual atoms making up the compound. In NH₃ we have 1 nitrogen atom and 3 hydrogen atoms.
Therefore the total mass of nitrogen in the compound= 1 ×molar mass of nitrogen.
Total mass of nitrogen= 3× molar mass of hydrogen.
If we were to calculate the molar mass of ammonia it would be:
14+ (3×1)= 17
Answer: B) It is going through a physical change.
Explanation:
A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.
Example: Freezing of water
The solid water can be changed to liquid by heating or lowering the pressure.
The chemical make up of water remains same.
A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.
Example: Corrosion of iron
It can not be reversed.