chem UNIT 5.4 Review: Mole Concept

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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, ions, etc.) as there are in 12 grams of carbon-12.

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How do you calculate the number of moles from grams?

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Number of moles = mass (grams) / molar mass (g/mol).

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What is the molar mass of Ti(NO3)4?

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The molar mass of Ti(NO3)4 is approximately 292.11 g/mol.

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How many moles are in 675 grams of Ti(NO3)4?

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2.28 mol Ti(NO3)4.

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What is the molar mass of BaCO3?

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The molar mass of BaCO3 is approximately 197.34 g/mol.

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How many moles are in 540 grams of BaCO3?

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2.737 mol BaCO3.

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What is the molar mass of CO2?

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The molar mass of CO2 is approximately 44.01 g/mol.

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What is the mass of 4.00 moles of CO2?

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176 g CO2.

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How do you convert moles to grams?

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Mass (grams) = number of moles × molar mass (g/mol).

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What is the molar mass of CaBr2?

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The molar mass of CaBr2 is approximately 199.89 g/mol.