What is the charge on an ion that has 10 electrons, 12 protons, and 11 neutrons?
a. 1+
b. 2+
C. 1-
d. 2-

How can one make a supersaturated solution? (apex)

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.

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.