Chemistry Final Review Part 1

Front

What is the mole ratio of C to CS₂ according to the balanced chemical equation?

Back

5 mol C / 1 mol CS₂

Front

What is the mass of 0.750 mol of nitrogen (N)?

Back

10.5 g

Front

What are the products of the neutralization reaction: HBr (aq) + NaOH(aq)?

Back

NaBr(aq) + H₂O(l)

Front

What is the empirical formula for a compound that is 3.73% hydrogen, 44.44% carbon, and 51.83% nitrogen?

Back

HCN

Front

What coefficients balance the chemical equation: ? + ? HBr + ? NaOH → ? NaBr + ? H₂O?

Back

4, 3, 2

Front

Define a mole in chemistry.

Back

A mole is a unit that measures the amount of a substance, defined as 6.022 x 10²³ particles (atoms, molecules, etc.).

Front

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

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, following the law of conservation of mass.

Front

What is the significance of the coefficients in a balanced equation?

Back

Coefficients indicate the relative amounts of reactants and products involved in a chemical reaction.

Front

What is a neutralization reaction?

Back

A neutralization reaction is a chemical reaction between an acid and a base that produces a salt and water.