Answer:
1 only
Explanation:
a compound is a mix of two different elements, two of the same element is just a molecule
Answer:
10
Explanation:
Basically same as last question but the number is before the compound :)
Answer:
x = 0.45*28/3 = 4.2 g
Explanation:
showing work
N2 = 28 g/mole
3Mg + N2 → Mg3N2
3moles .. 28 g
0.45 moles .. x
x = 0.45*28/3 = 4.2 g (answer)