Based on your data, how does mass affect weight

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

Aswimming pool whose volume is 10 comma 000 gal contains water that is 0.01% chlorine. starting at tequals0, city water containing 0.003% chlorine is pumped into the pool at a rate of 5 gal/min. the pool water flows out at the same rate. what is the percentage of chlorine in the pool after 1 hour? when will the pool water be 0.006% chlorine?

Boiling water is an example of physical change. true or false