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Simple chem question - please help! Given the equation: N2 +2O2 → 2NO2, what mass of oxygen is required to react completely with 7g of nitrogen? A) 8 g B) 16 g C) 32 g D) 64 g
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3 votes
Simple chem question - please help!

Given the equation: N2 +2O2 → 2NO2, what mass of oxygen is required to react completely with 7g of nitrogen?

A) 8 g
B) 16 g
C) 32 g
D) 64 g

User OleVik
by
8.4k points

2 Answers

3 votes

Answer:

guy above is right

Step-by-step explanation:

User Jose The Hose
by
8.3k points
2 votes
Molar mass O₂ = 32.0 g/mol and N₂ = 28.0 g/mol

N₂ +2 O₂ → 2 NO₂

28.0 g -------> 32.0 * 2
7 g ----------> ?

Mass of O₂ = 7 * 32.0 * 2 / 28.0

Mass of O₂ = 448 / 28.0

= 16 g of O₂

Answer B

hope this helps!
User Akhil Choudhary
by
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