Question

How many moles of propylene (C3H6) are in 25.0
g
of the substance?

Answer 1

0.59 moles of propylene ($C_3H_6$) are in 25.0g of the substance.

What are moles?

A mole is defined as 6.02214076 × $10^{23}$ of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Given data:

Mass of propylene = 25.0g

Molar mass of propylene=42.08 g/mol

$Moles = \frac{mass}{molar \;mass}$

$Moles = \frac{25.0g}{42.08 g/mol}$

Moles =0.59 moles

Hence, 0.59 moles of propylene ($C_3H_6$) are in 25.0g of the substance.

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