What change would increase the amount of gas able to be dissolved in a given amount of liquid water?
To determine the change that would increase the amount of gas able to be dissolved in a given amount of liquid water, we need to consider Henry's Law. Henry's Law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid.
In other words, increasing the pressure of the gas above the liquid will increase the amount of gas that can be dissolved in the liquid.
Therefore, the change that would increase the amount of gas able to be dissolved in a given amount of liquid water is to increase the pressure of the gas above the water. This can be achieved by either increasing the total pressure of the system or by using a container with a higher gas pressure.
By increasing the pressure, more gas molecules will be forced into the liquid water, resulting in a higher concentration of dissolved gas.