Answer
A. molecules
Explanation
When atoms or elements combine, they are called molecules. When molecules combine they form compounds.
Answer:

Explanation:
Given data:
Mass of mixture = 454 kg
Initial temperature is 10°C
Heat added is Q = 121300 kJ
Heat capacity (Applesuace) at 32.8°C is 4.02kJ/kg K
From heat equation we have



Putting all value to get required final temperature value


The balanced chemical equation is :

Moles of
,

Now, by given chemical equation , we can see 2 mole of
react with 1 mole of
.
So , 2.27 mole react with :

Mass of oxygen is :

Therefore, mass of oxygen in grams produced is 18.16 g.
Hence, this is the required solution.
The answer to your question is option 1. I hope this has helped.
Answer: The mass of the nucleus is less than the mass of the 8 protons and 8 neutrons.
Explanation: