Please help A balloon holds 50.0 mL of nitrogen at 25° C and a pressure of 736 mm Hg.

According to Boyle's Law, answer the following questions for 2 points each:

What will be the effect on the pressure inside the balloon if the volume is decreased to 25 mL?
Explain how this would demonstrate Boyle's Law.
Explain Boyle's Law in terms of the kinetic energy of molecules.

In the reading, yao chen-yuan describes traveling to deliver a message. why was he willing to risk danger to travelto tientsin? he wanted to the boxers with their cause

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

The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?