Most combustion reactions use oxygen from air (assume 20% oxygen). what mass of propane from a tank can be burned using 125L of air at SATP

Imagine one batch of soup (batch “a”) is made with 8.19 g/can of salt, according to the recipe, and a second batch of soup (batch “b”) is made with 8.32 g/can of salt. explain which batch would be more resistant to frost damage if it is shipped a great distance in winter and explain why.