Question

The gram-formula mass of NO2 is defined as the mass of

Answer 1

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~

Answer 2

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.