Stoichiometry - ADVANCED

Front

What is Stoichiometry?

Back

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

Front

Define the Law of Conservation of Mass.

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

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What is a mole in chemistry?

Back

A mole is a unit of measurement in chemistry that represents 6.022 x 10^23 particles (atoms, molecules, ions, etc.).

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How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).

Front

What is molar mass?

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is the balanced equation for the combustion of methane (CH4)?

Back

The balanced equation is CH4 + 2 O2 → CO2 + 2 H2O.

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How do you determine the limiting reactant in a chemical reaction?

Back

The limiting reactant is the reactant that is completely consumed first in a chemical reaction, limiting the amount of product formed.

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What is the theoretical yield?

Back

The theoretical yield is the maximum amount of product that can be produced from a given amount of reactants, calculated based on stoichiometric ratios.

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What is the difference between theoretical yield and actual yield?

Back

Theoretical yield is the calculated maximum amount of product, while actual yield is the amount of product actually obtained from a reaction.

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How do you calculate percent yield?

Back

Percent yield is calculated using the formula: (actual yield / theoretical yield) x 100%.