Question

Plsssssss! help! 20 points

A sample of N2H4 has a mass of 25g. Identify the numerical quantity that is needed to convert the number of grams of N2H4 to the number of moles of N2H4. (You do not need to do the actual calculation.)

Answer 1

The answer is molecular mass.

Step-by-step explanation:

In order to convert grams to moles. you have to find the molar mass of N2H2.

Answer 2

Step-by-step explanation:

molecular weight of N₂H₄ is as follows

2 x 14 + 4 x 1 = 32

so 32 gram of N₂H₄ is equal to one mole of N₂H₄

25 gram of N₂H₄ will be equal to 25 / 32 mole of N₂H₄

so numerical quantity needed to convert grams of N₂H₄ to mole is

1 / 32 or .03125 . This number needs to be multiplied with grams of N₂H₄

to convert it to number of moles.