Verified Answer :

Billymkhoi

The correct answer is (1) one mole of NO2.

The gram formula mass is also known as the molar mass and is defined by the mass over one mole of a substance.

Hope this helps~

Ishankahps

Correct
answer is 1 - one mole of
NO2 .  

Gram formula mass can be defined as the mass
of 1 mole (6.022 x 10²³ particles) of compound in grams. This is similar to molar mass. Gram formula
mass is also calculated by adding the total mass of each element present in the
given formula. 

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