a certain solution has a molarity of m = 6.39 mol/l and has a volume of v = 0.550 l what is the value of n

A total of 0.829 L of hydrogen gas is collected over water at 33.0°C. The total pressure is 794 torr. If the vapor pressure of water at 33.0°C is 13.2 torr, what is the partial pressure of hydrogen?

Some chemical reactions take a very long time to go to completion or cannot be directly measured. Which law allows one to use two or more thermochemical equations to calculate the heat of a reaction indirectly?

How do you prove law of conservation of mass?

Which part of a helium atom is positively charged

A general term for an attractive force that holds two atoms together is known as an

Which best describes the molecules of an ideal gas

MgNH4PO4> Mg2P2O7+NH3+H2O

If 1.0 gram of matter was converted to energy, how much energy would be formed? A. 9.0 x 10-13 joules B. 9.0 x 1013 joules C. 3.0 x 1013 joules D. 3.0 x 108 joules

A piece of metal ore weighs 8.50 g. when a student places it into a graduated cylinder containing water, the liquid level rises from 21.25 ml to 26.47 ml. what is the density of the ore?

Find the mass of 3.65 x 10^-2 mol K2SO4