How many grams of water can be produced from 10 moles of hydrogen gas?

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

In salt water solution,the salt is the blank