Question

1. How many moles of sulfur are in 40g of sulfur?

Answer 1

1 sulfur

Step-by-step explanation:

1 mole is equal to 1 moles Sulfur, or 32.065 grams

Answer 2

`\boxed {\boxed {\sf 1.24727159 \ moles \ of \ sulfur }}`

Step-by-step explanation:

To convert from grams to moles, we must use the molar mass found on the Periodic Table of Elements.

1. Molar Mass

This is a sample of sulfur, so look for S on the table.

• S: 32.07 g/mol

2. Convert from Grams to Moles

Use the molar mass as a ratio.

`\frac { 32.07 \ g \ S}{ 1 \ mol \ S }`

Multiply by the given number of grams: 40

`40 \ g \ S * \frac { 32.07 \ g \ S}{ 1 \ mol \ S }`

Flip the fraction so the grams of sulfur will cancel each other out.

`40 \ g \ S * \frac {1 \ mol \ S }{ 32.07 \ g \ S}=40* \frac {1 \ mol \ S }{ 32.07 }`

`\frac {40 \ mol \ S } { 32.07 } = 1.24727159 \ mol \ S`

There are 1.24727159 moles of sulfur.