How is a compound different from a mixture?

It takes Sam 0.5 hour to drive to school. His route is 32 km long. What is Sam's average speed?

Whats the mass of an atom that contains 28 protons, 28 electron, and 34 neutrons

How much heat energy is required to boil 87.7 g of ammonia, NH3? The molar heat of vaporization of ammonia is 23.4 kJ/mol.

If the bark is stripped off a tree, the tree will ... ?

How many moles are in 3.50 x 1024 atoms of yttrium

At a certain temperature, this reaction establishes an equilibrium with the given equilibrium constant, kc. if, at this temperature, 2.20 mol of a and 3.70 mol of b are placed in a 1.

What is an alloy consisting primarily of iron and carbon

How many moles of H2O are there in1.0g of H20?

Which property of gases allows them to be stored at high concentrations in a bottle of air freshener? What changes occur at the molecular level when ice cream melts and forms a liquid?

a gas has a volume of 6 liters and a pressure of 1.5 atm. if the container is compressed to a volume of 2 liters, what will the pressure of the gas be?