Astock solution containing mn2+ ions was prepared by dissolving 1.166 g pure manganese metal in nitric acid? and diluting to a final volume of 1.000 l. the following solutions were then prepared by dilution. for solution a, 50.00 ml of stock solution was diluted to 1000.0 ml. for solution b, 10.00 ml of solution a was diluted to 250.0 ml. for solution c, 10.00 ml of solution b was diluted to 500.0 ml. calculate the molar concentrations of the stock solution and solutions a, b, and c.

Achemical reaction (also known as a chemical change) produces substances that are chemically different from the starting materials. an example of a chemical reaction is the formation of water from hydrogen and oxygen gas. in a physical change, a substance changes its physical appearance but not its chemical identity. an example of physical change is the formation of liquid water from solid water, a familiar process called melting. physically, liquid water looks very different from solid water (ice) but the chemical identity, water, is the same for both. which of following changes that affect the composition of our atmosphere involve physical changes and which involve chemical reactions? oxygen gas changes to ozone during thunderstorms carbon dioxide is produced by the combustion of gasoline in an automobile engine. when coal, oil, and natural gas are decomposed in landsills they produce methane gas. freezing rain develops when a warm air mass overrides a cold air mass. fog forms from water vapor when the temperature drops below the dew point

How would you reduce the volume of gas

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?