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?

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To convert moles to grams, use the formula: grams = moles × molar mass. The molar mass is the mass of one mole of a substance, usually expressed in grams per mole (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 = grams / molar mass. The molar mass is the mass of one mole of a substance, usually expressed in grams per mole (g/mol).

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

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

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Calculate the mass of 0.25 moles of rubidium bromide (RbBr).

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Mass = 0.25 moles × 165.34 g/mol = 41.34 g.

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What is the molar mass of zinc sulfide (ZnS)?

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The molar mass of zinc sulfide (ZnS) is approximately 97.45 g/mol.

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How many grams of zinc are in 15.0 grams of zinc sulfide (ZnS)?

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To find grams of zinc in ZnS, first calculate moles of ZnS: 15.0 g / 97.45 g/mol = 0.154 moles. Then, since there is 1 mole of Zn per mole of ZnS, grams of Zn = 0.154 moles × 65.38 g/mol = 10.1 g.

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What is the molar mass of cobalt(II) nitrate, Co(NO3)2?

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The molar mass of cobalt(II) nitrate, Co(NO3)2, is approximately 182.9 g/mol.

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Calculate the grams in 0.84 moles of cobalt(II) nitrate, Co(NO3)2.

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Mass = 0.84 moles × 182.9 g/mol = 153.6 g.

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What is the molar mass of calcium (Ca)?

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The molar mass of calcium (Ca) is approximately 40.08 g/mol.