Question

6) A student measures out 96.21 g of sulfur for an experiment. How many moles of Sulfur are in this

sample? (show your work!)

Answer 1

Atomic mass of Sulfur = 32g

32g of Sulfur is one mole.

1g of Sulfur is
`(1)/(32) moles`

96.21g of Sulfur is
`(96.21)/(32) moles=> 3moles(appx)`

Answer 2

`\boxed {\boxed {\sf 3 \ moles \ sulfur}}`

Step-by-step explanation:

To convert from grams to moles, the molar mass is used. This value is the number of grams in 1 mole of a substance and it can be found on the Periodic Table. Look for Sulfur or S.

• Sulfur: 32.07 g/mol

We use this as a ratio.

`\frac {32.07 \ g \ S}{1 \ mo;\l\ S }`

Multiply by the given number of grams.

`96.21 \ g \ S*\frac {32.07 \ g \ S}{1 \ mo\l\ S }`

Flip the fraction so the grams of sulfur cancel out.

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

`96.21*\frac {1 \ mol \ S}{32.07 }`

`\frac {96.21 \ mol \ S}{32.07 }= 3 \ mol \ S`

96.21 grams of sulfur is equal to 3 moles of sulfur.