Answer:
You also know about the mass of that sample, if you know the moles
(First option)
Explanation:
Moles = Mass / Molar mass
Moles . Molar mass = Mass
For example, I have 4 moles of H₂O
Molar mass H₂O = 18 g/m
4 m . 18 g/m = 72 g
If I have 4 moles of H₂O, I also have 72 grams of water too.
Answer:
cross pollination
Explanation:
is when two types of plants are mixed to create a better or hardier plant
If a substance reacts with oxygen, the chemical reaction is most likely a combustion reaction. Combustion reactions always involve molecular oxygen O2. <span>Anytime anything burns (in the usual sense), it is a </span>combustion reaction<span>. Hope this answers the question.</span>