An anhydrous form of a compound is 38.95% of the mass of its heptahydrate form. Calculate it's molar mass.

How is electronegative related to covalent bonding?

Describe the best way Ryan can increase the rate of dissolving of lead (II) chloride in a solution. A) Increase the temperature of the water. B) Increase the concentration of the salt. C) Increase the particle size of the solute.

A chemist reported that 100 gallons of gas were available in a laboratory which property of the gas to the chemist report? A. Length B. Mass C. Temperature D. Volume

A mixture was found to contain 1.05g of sio2, 0.69g of cellulose, and 1.82g of calcium carbonate, what percentage of calcium carbonate is in the mixture

86.1 g of nitrogen reacts with lithium, how many grams of lithium will react?

If you start with 4 moles of iron and 3 moles of oxygen to produce iron oxide, what is the limiting reagent? (You will need to balance the equation first.) Fe + O2 - > Fe2O3

Is burning wood a physical change

A gas is located inside a closed container. if the gas is allowed to occupy more volume inside the container, what will happen to the pressure? (note: there is no gas added to the container.)

An open-end manometer containing mercury was connected to a vessel holding a gas at a pressure of 767 torr. The atmospheric pressure was 724 torr. What is the difference in the heights of the mercury, expressed in cm?

When does raising the temperature of a gas increase its pressure? A. temperature B. volume C. number of particles D. pressure