what is the molarity of a solution prepared by dissolving 54.3 g of ca(no3)2 to form 355 ml of the solution?

What kinds of antigens are found on the rbcs of a person with a+ blood

Raul has one solution that is 20% acid by volume and one solution that is 50% acid by volume. he plans to mix together some of each solution to create 30 milliliters of a solution that is 40% acid by volume. how many milliliters of the 20% acid solution should raul use to create the 40% acid solution? can someone explain this to me? i know that the answer is 10 milliliters, but i don't know how to get it.

Which activity is not something students are required to do on the act reading test