Question

Calculate the number of moles of 68 grams of NH3

Answer 1

Answer:

4

Explanation:

No. Of moles = MASS GIVEN / MOL. MASS

no. Of moles ,= 68/mol.mass of NH3

Mol.mass of NH3 is 14+3 = 17

No. of moles = 68/17 = 4n

Answer 2

Answer:4 moles

Explanation:no.of moles =wt./ molecular wt.

Given wt. 68g

Molecular wt. of NH3 = 14+1*3=17

Therefore :

Moles =68/17 =4