No, because there’s 6 Oxygens going in and only 3 going out. To balance:
2S+3O2 -> 2SO3
A. good conductors - copper, aluminium
b. fair conductors - carbon,human body
c. insulator - paper, wood
The answer is (3) 53.5 g/mol. The gram formula mass means that the mass of one mol compound. 1N=14, 4H=4, 1Cl=35.5. So the gram formula mass of NH4Cl=14+4+35.5=53.5 g/mol.