Stoichiometry

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What is Stoichiometry?

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Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

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What is a mole ratio?

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A mole ratio is a ratio that relates the amounts in moles of any two compounds involved in a chemical reaction.

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How do you determine the mole ratio from a balanced equation?

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The mole ratio is determined by the coefficients of the reactants and products in a balanced chemical equation.

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What is the first step in solving a stoichiometry problem?

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The first step is to write a balanced chemical equation for the reaction.

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What is the significance of a balanced equation in stoichiometry?

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A balanced equation ensures that the law of conservation of mass is followed, allowing for accurate calculations of reactants and products.

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How many moles are in 13.5 grams of Beryllium (Be)?

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To find the number of moles, use the formula: moles = mass (g) / molar mass (g/mol). Molar mass of Be is 9.012 g/mol, so moles = 13.5 g / 9.012 g/mol = 1.5 moles.

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What is the molar mass of Aluminum Sulfate (Al2(SO4)3)?

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The molar mass of Aluminum Sulfate is 342.15 g/mol.

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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 by its molar mass.

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What is the formula to calculate the number of particles in a sample?

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The formula is: Number of particles = moles × Avogadro's number (6.022 x 10^23 particles/mol).

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What is Avogadro's number?

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Avogadro's number is 6.022 x 10^23, which is the number of atoms, molecules, or particles in one mole of a substance.