Mole calculations

Front

What is a mole in chemistry?

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A mole is a unit of measurement used to express the amount of a substance. It is defined as the amount of substance that contains as many entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.

Front

How do you calculate the number of moles from grams?

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To calculate the number of moles from grams, use the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the molar mass of Carbon (C)?

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The molar mass of Carbon (C) is approximately 12 g/mol.

Front

What is the molar mass of Ammonium Sulfide (NH4)2S?

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The molar mass of Ammonium Sulfide is approximately 68 g/mol.

Front

How many moles are in 48 g of Carbon?

Back

4 mol (calculated using the formula: Moles = 48 g / 12 g/mol).

Front

What is the molar mass of water (H2O)?

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The molar mass of water (H2O) is approximately 18 g/mol.

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How many grams are in 3 mol of Ammonium Sulfide?

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204 g (calculated using the formula: Mass = Moles x Molar Mass = 3 mol x 68 g/mol).

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How do you convert grams to moles?

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To convert grams to moles, use the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the molar mass of Methanol (CH3OH)?

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The molar mass of Methanol (CH3OH) is approximately 32 g/mol.

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How many moles are in 54 g of Methanol?

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1.7 mol (calculated using the formula: Moles = 54 g / 32 g/mol).