Percentages Composition

Multiple Choice

How many moles are there in a 50 g of Carbon dioxide?

• 1.14 mols

• 1.14 g/mol

• 600.5 mol

• 600.5 g/mol

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What is the total molar mass of Barium Phosphate?

Ba3(PO4)2

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How many moles are there in 75g of KClO3?

Poll

what element has higher percentage composition in Al2(SO4)3

• Al

• O

• S

Open Ended

Why do we need to know the percentage composition of a compound?

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total molar mass of iron (III) hydroxide, Fe(OH)3?

Fill in the Blanks

What percent of iron (III) hydroxide, Fe(OH)3, is oxygen?

Multiple Choice

Percentage composition of Carbon in Carbon Dioxide

• 22.2%

• 27.29%

• 52.8%

• 10.04%

Multiple Choice

Percentage composition of Na in NaCl

• 52.9%

• 99.2%

• 60.61%

• 39.34%