Question

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.

Answer 1

Molecular mass

Step-by-step explanation:

25g of N2H4 is given

in order to find number of moles we need Molecular mass

Molecular mass of N2H4 = 2*14 + 4*1= 32g

No of moles = given mass /molar mass = 25/32 = 0.78moles