Practice AC Final Number 2

Front

What is the molar mass of aluminum sulfate (Al2(SO4)3)?

Back

342.14 g

Front

How do you calculate the specific heat capacity of a substance?

Back

Specific heat capacity (c) = (mass of substance (m) × specific heat of water (c_w) × change in temperature of water (ΔT_w)) / (mass of water (m_w) × change in temperature of substance (ΔT_s)).

Front

What is the volume of one mole of gas at standard temperature and pressure (STP)?

Back

22.4 Liters.

Front

What is the chemical formula for hydrofluoric acid?

Back

HF.

Front

Which element is most likely to form a negative ion with a charge of 1-?

Back

Chlorine (Cl).

Front

What is the definition of calorimetry?

Back

Calorimetry is the science of measuring the heat of chemical reactions or physical changes.

Front

What is the formula to calculate the heat absorbed or released in a reaction?

Back

q = m × c × ΔT, where q is heat, m is mass, c is specific heat capacity, and ΔT is the change in temperature.

Front

What is the significance of STP in gas calculations?

Back

STP (Standard Temperature and Pressure) is used as a reference point for gas calculations, defined as 0°C (273.15 K) and 1 atm pressure.

Front

What is the relationship between moles and mass in chemistry?

Back

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

Front

What is the definition of a mole in chemistry?

Back

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