Moles to grams and grams to moles

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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.

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How do you convert moles to grams?

Back

To convert moles to grams, use the formula: grams = moles × molar mass (g/mol).

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How do you convert grams to moles?

Back

To convert grams to moles, use the formula: moles = grams / molar mass (g/mol).

Front

What is the molar mass of lithium (Li)?

Back

The molar mass of lithium (Li) is approximately 6.94 g/mol.

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What is the molar mass of carbon (C)?

Back

The molar mass of carbon (C) is approximately 12.01 g/mol.

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What is the molar mass of sodium (Na)?

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The molar mass of sodium (Na) is approximately 22.99 g/mol.

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What is the molar mass of silicon (Si)?

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The molar mass of silicon (Si) is approximately 28.09 g/mol.

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Calculate the mass of 0.5 moles of water (H2O).

Back

Mass = 0.5 moles × 18.02 g/mol = 9.01 g.

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What is the formula to calculate the percent composition of an element in a compound?

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Percent composition = (mass of element in 1 mole of compound / molar mass of compound) × 100%.

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What is the molar mass of rubidium bromide (RbBr)?

Back

The molar mass of rubidium bromide (RbBr) is approximately 165.34 g/mol.