1. Intro to General Chemistry

What is the density of nitrogen gas (N_2) at standard temperature and pressure (STP)?

At which temperature is pure water most dense?

Which sample has a higher density: 1.00 g of pure gold or 1.00 kg of pure gold?

An object has a mass of 27 g and a volume of 9 cm^3. What is its density?

What is the density of a piece of metal that has a mass of 60 g and a volume of 3 cm^3?

Density is defined as the amount of mass in a certain:

An increase in seawater density can be caused by which of the following?

What is the density of mercury at room temperature, expressed in g/cm^3?

Which of the following best describes a hydrometer?

Which answer best describes why ice floats in liquid water?

What is the density of an object with a volume of 5 cm^3 and a mass of 55 g?

What happens to the density of water as it is heated?

Which of the following best describes specific gravity and its relationship to density?

A sample of water has a volume of 10.0 cm^3. Given that the density of water is 1.0 g/cm^3, how many water molecules are present in the sample? (Molar mass of H_2O = 18.0 g/mol; Avogadro's number = 6.02 × 10^{23} molecules/mol)

A sample of brass weighing 1.203 grams occupies a volume of 0.150 cm^3. What is the density of the brass sample?