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We are asked what is the mass of 0.500 moles of dichlorodifluoromethane (CCl _{2}F_{2})

To find the mass of 0.500 moles of CCl _{2}F_{2}, recall the formula for Molar Mass:

$\overline{){\mathbf{Molar}}{\mathbf{}}{\mathbf{mass}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}\frac{\mathbf{mass}\mathbf{}\mathbf{compound}}{\mathbf{moles}\mathbf{}\mathbf{compound}}}$

**Molar ****mass CCl **_{2}**F**_{2}** **

1 × 12.01 g/mol C = 12 g/mol C

2 × 35.45 g/mol Cl = 2 g/mol Cl

2 × 19.00 g/mol F = 16 g/mol F

Molar Mass = **120.91 g/ mol ****CCl **_{2}**F**_{2}

What is the mass of 0.500 mol of dichlorodifluoromethane (CCl _{2}F_{2})?