Mole Conversions

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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 the same number of entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12, which is approximately 6.02 x 10^23 entities.

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How many molecules are in 1 mole?

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1 mole contains approximately 6.02 x 10^23 molecules, known as Avogadro's number.

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What is the formula to convert grams to moles?

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What is the molar mass of a substance?

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The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a molecule.

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How do you calculate the molar mass of a compound like Al2(CO3)3?

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To calculate the molar mass of Al2(CO3)3, sum the molar masses of all atoms: 2(26.98 g/mol for Al) + 3(12.01 g/mol for C + 3(16.00 g/mol for O) = 233.99 g/mol.

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What is the relationship between moles and molecules?

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The relationship is given by Avogadro's number: 1 mole of any substance contains 6.02 x 10^23 molecules.

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How do you convert moles to grams?

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What is the significance of Avogadro's number?

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Avogadro's number (6.02 x 10^23) is significant because it allows chemists to count particles by weighing them, linking the macroscopic and microscopic worlds.

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If you have 57.2 grams of NiS, how do you find the number of moles?

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What is the mass of 4.98 x 10^24 atoms of Zn?

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