If sodium trioxocarbonate(IV) decahydrate contains 62 per cent of water of crystallization, what mass of crystals are expected to be obtained from 3.69 g of anhydrous sodium trioxocarbonate (IV)?

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.

What is a number added in front of a formula in order to balance the equation