How many percent of ca are in calcium carbonate

A gas occupies 11.2 liters at 0.860 atm. what is the pressure if the volume becomes 15.0 L

A mixture of helium and neon gases has a density of 0.2460 g/L at 35.2°C and 288 torr. What is the mole fraction of neon in this mixture?

Assume that the rate law for a generic chemical reaction is rate = [a][b]3. what is the reaction order in a, the reaction order in b, and the overall reaction order?

The bond between Br atoms in a Br2 molecule is (1) ionic and is formed by the sharing of two valence electrons (2) ionic and is formed by the transfer of two valence electrons (3) covalent and is formed by the sharing of two valence electrons (4)

Enter a range of values for x, 2x+10, 14

HNO3 + H2O > H3O (aq) + NO3 - (aq)

What do you get when you mix lemons with gunpowder

What is the mass of 9.92*10^24 molecules of methanol?

How many moles of h2so4 are required to react with 6.80 miles of al2o3

Which explanation best describes a wave? A. a disturbance that travels through a medium with a transfer of energy and matter B. a disturbance that travels through a medium without a transfer of energy and matter C.