Predict the effect of each change on one variable if the other variables are held constant. a. If the number of moles of gas increases, what is the effect on the temperature of the gas? b. If the temperature of a gas decreases, what is the effect on the pressure of the gas? c. If the volume of a gas increases, what is the effect on the temperature of the gas? d. If the pressure of a gas increases, what is the effect on the number of moles of the gas