Avolume is measured experimentally as 4.15 ml. what is the percent error , given that the correct value is 4.17ml?

What is the maximum amount of al2(so4)3 which could be formed from 15.84 g of al and 12.89 g of cuso4?

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

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.