Question

n : 14.01 g/mol
h : 1.01 g/mol
s : 32.07 g/mol
o : 16.00 g/mol
what is the molar
mass of this
compound?
(nh4)2so4
132.17 g/mol
114.12 g/mol
128.13 g/mol
63.09 g/mol

Explanation:

Step1: Calculate the molar mass of N

There are 2 N atoms in \((NH_4)_2SO_4\). The molar mass of N is \(14.01\space g/mol\), so for N: \(2\times14.01 = 28.02\space g/mol\)

Step2: Calculate the molar mass of H

There are \(2\times4 = 8\) H atoms. The molar mass of H is \(1.01\space g/mol\), so for H: \(8\times1.01=8.08\space g/mol\)

Step3: Calculate the molar mass of S

There is 1 S atom. The molar mass of S is \(32.07\space g/mol\), so for S: \(32.07\space g/mol\)

Step4: Calculate the molar mass of O

There are 4 O atoms. The molar mass of O is \(16.00\space g/mol\), so for O: \(4\times16.00 = 64.00\space g/mol\)

Step5: Sum up the molar masses

Add the molar masses of N, H, S and O together: \(28.02+8.08 + 32.07+64.00=132.17\space g/mol\)

Answer:

132.17 g/mol