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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?

A8 g
B16 g
C32 g
D64 g

Verified Answer :

Willchemistry

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!

Answer:

guy above is right

Explanation:

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