Answer:
B
Explanation:
Compounds are made up of 2 or more different atoms that bond to form a compound.
9 g of hydrogen - 42 g of nitrogen
5 g of hydrogen - x g of nitrogen

The mass of nitrogen in the second sample is 23.33 g.
Answer:
A Planet
Explanation:
The earth for example, is a large body that orbits the sun, our local star