A sample of hydrogen gas has an initial temperature of 50° C. When the temperature is lowered to -5° C, the volume of hydrogen becomes 212 cm^3. What was the initial volume of the hydrogen in cm^3 when the pressure is kept constant?

Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration