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 grams to moles?

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To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol). Formula: Moles = Mass (g) / Molar Mass (g/mol).

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How do you convert moles to grams?

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To convert moles to grams, multiply the number of moles by the molar mass of the substance (in g/mol). Formula: Mass (g) = Moles × Molar Mass (g/mol).

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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 97.44 g/mol (Zinc: 65.38 g/mol + Sulfur: 32.06 g/mol).

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

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0.15 moles (calculated using the formula: Moles = Mass / Molar Mass).

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

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Percent composition is the percentage by mass of each element in a compound. It is calculated by dividing the mass of the element in one mole of the compound by the molar mass of the compound, then multiplying by 100.

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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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How many grams are in 0.84 moles of cobalt(II) nitrate, Co(NO3)2?

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153.6 grams (calculated using the formula: Mass = Moles × Molar Mass).

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If the molar mass of magnesium (Mg) is 24.305 g/mol, how many grams are in 5 moles of Mg?

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121.525 grams (calculated using the formula: Mass = Moles × Molar Mass).

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What is the formula to calculate the number of moles from mass and molar mass?

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Moles = Mass (g) / Molar Mass (g/mol).