Done Use the periodic table to select the element that best fits each of the following descriptions.
Which solution below most likely shows a vivid
color?
potassium chloride
nickel chloride
hydrogen chloride
lithium chloride
DONE

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

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.

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.