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sweet [91]
1 year ago
5

A student has a sample of isopropanol (C3H7OH) that has a mass of 78. 6 g. The molar mass of isopropanol is 60. 1 g/mol. How man

y moles of isopropanol are contained in this sample? 0. 765 moles 1. 31 moles 78. 6 moles 4,720 moles.
Chemistry
1 answer:
soldi70 [24.7K]1 year ago
8 0

Mole is the ratio of the mass to the molar mass of the substance and its unit is mol. The moles of isopropanol in the sample are 1. 31 moles.

<h3>What are moles?</h3>

Moles are the unit of measurement of the smallest entity of atoms, molecules, and compounds.

Given,

Mass of isopropanol (m) = 78. 6 g

Molar mass of isopropanol = 60. 1 g/mol

Moles of isopropanol is calculated as:

\begin{aligned} \rm moles (n) &= \rm \dfrac{mass}{molar \; mass}\\\\&= \dfrac{78.6}{60.1}\\\\&= 1.31\;\rm  moles\end{aligned}

Therefore, moles of isopropanol are option b. 1.31 moles.

Learn more about moles here:

brainly.com/question/7210732

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