A variable is something that can never be changed in an experiment.

False

True

If the solubility of a gas in water is 2.4 g/l when the pressure of the gas above the water is 5.0 atm what is the pressure of the gas above the water when the solubility of the gas is 1.0 g/l

Which statement describes the particle of an ideal gas? (1) The particles move in well-defined, circular paths (2) When the particles collide, energy is lost (3) There are forces of attraction between the particles (4) The volume of the particle is

The atomic number of one particular isotope is equal to its mass number. which isotope is it?

Write down two other examples of nonrenewable resources.

Explain the energy transformation that must occur for your body to participate in a physical activity, such as playing a sport.

Suppose a solution was too concentrated for an accurate reading with the spectrophotometer. The concentrated solution was diluted by placing 1.00 mL of the concentrated solution in 4.00 mL of water.

What kinds of scientific investagations involve making observations

According to the kinetic molecular theory, when a gas particle hits something what will happen?

Protons and neutrons are made from which of the following? hadrons down quarks only up quarks and down quarks up quarks only

Not all of the water falls as rain, snow, or sleet evaporates. What happens to the rest of the water?