How many bromine atoms are present in 39.9 g of CH2Br2

A sample of gas is in a sealed rigid cointaner that maintains a constant volume which changes occur between the gas particles when the sample is heated

Hydrogen peroxide breaks down into water and oxygen, explain why this is a chemical reaction

Which best defines partial pressure in a mixture of gases? O pressure that is exerted by all the gases of a mixture on the container O pressure that is exerted by one gas as if it occupied a container by itself O half of the pressure that is exerted

What happens when the amoeba proteus is placed in distilled water?

Consider the following system at equilibrium: P (aq) + Q (aq) ⇌3R (aq) Classify each of the following actions by whether it causes a leftward shift, a rightward shift, or no shift in the direction of the net reaction.

Raising the temperature of a reacting system increases the rate of the reaction, but does NOT increase the a) activation energy b) number of collisions c) fraction of the reacting particles which possess energies greater than the activation energy

If you have 60 grams of MgCl2 in 5 liters of solution, what is the molarity of this solution?

Is evaporation/condensation a physical or chemical change? Explain

Would the two as yet undiscovered elements A+1 and D+2 react?

Ammonium perchlorate is a powerful solid rocket fuel, used in the Space Shuttle boosters. It decomposes into nitrogen gas, chlorine gas, oxygen gas and water vapor, releasing a great deal of energy.