Question

What is the molar mass of carbon monoxide (in units of g/mol)? Use two decimal places in atomic masses. Only give the numeric value of your answer.Respond with the correct number of significant figures in scientific notation (Use E notation and only 1 digit before decimal e.g. 2.5E5 for 2.5 x 10⁵)

Answer 1

ANSWER

The molar mass of carbon monoxide is 28g/mol or 2.8 x 10^1 g/mol

EXPLANATION

Given that

The chemical formula of carbon monoxide is CO

Note that, the unit mass of carbon is 12.01u and the unit mass of oxygen is 15.99u

Based on the atomic masses of the elements, we can now find the molar mass of CO

$\begin{gathered} \text{ CO = \lparen1 }\times\text{ 12.01\rparen + \lparen1 }\times\text{ 15.99\rparen} \\ \text{ CO = 12.01 + 15.99} \\ \text{ CO = 28g/mol} \\ \text{ CO = 2.8}\times\text{ 10}^1\text{ g/mol} \end{gathered}$

Therefore, the molar mass of carbon monoxide is 28g/mol or 2.8 x 10^1 g/mol