Question

Calculate the molar mass of pentacarbon disulfide.

Answer 1

`MM_(C_5S_2)=132.19g/mol`

Step-by-step explanation:

Hello!

In this case, since the computation of the molar mass requires the molecular formula, we first realize that of pentacarbon disulfide is C₅S₂ due to the given prefixes. In such a way, we multiply the atomic mass of carbon by five and that of sulfur by two as shown below:

`MM_(C_5S_2)=5m_C+2m_S`

Thus, we plug in the atomic masses given in the periodic table to obtain:

`MM_(C_5S_2)=5*12.01+2*32.07\\\\MM_(C_5S_2)=132.19g/mol`

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