Need help with a chemistry MCQ plz!Watch
Why cannot they be used in a mixed form?
A:CaSO4 formed on mixing, causes hard water.
B:When dampened, ammonia is given off.
Like.. Calcium causes hard water. While when the mixture is dampened, ammonia is given off. Both seem correct.
I want to know : Why would it not cause hard water? And
Why does is give off ammonia only when it's 'dampened'?