Question

How many grams in 1.5 moles of K2S?

Answer 1

165.3915 grams

Explanations:

To get the amount of grams in 1.5moles of K2S, we will use the formula;

`\text{Number of moles = }\frac{Mass}{Molar\text{ mass}}`

Given the following parameters;

Number of moles = 1.5 moles

Molar mass of K2S = 2(39.098) + 32.065

Molar mass of K2S = 78.196 + 32.065

Molar mass of K2S = 110.261g/mol

Get the mass of K2S;

`\begin{gathered} \text{Mass = Number of moles }* Molar\text{ mass} \\ \text{Mass = 1.5}*110.261 \\ \text{Mass = }165.3915\text{grams} \end{gathered}`

Hence the mass of 1.5 moles of K2S is 165.3915 grams