True or False: If you have 2 moles of water and 2 moles of carbon, you have the same number of molecules.

Calculate the density of a substance that has a mass of 250g and a volume of 50. Ml A-50 g/mL B-5.0 g/mL C-0.50 g/mL D-0.005 g/mL

A compound contains 69.9% iron and 30.1% oxygen. What is its empirical formula?

A non-spontaneous reaction is: a reaction that always releases free energy a reaction that will occur without an input of heat a reaction that will only occur with outside interference a reaction that will occur without outside interference A

A single electron has a charge of 4.5*10-15 z. using zeets and a fictitious unit of mass called the wiggle, w, the charge-to-mass ratio of an electron is 5.4*106 z/w. what is the mass of an electron in wiggles?

If the first set of reactants is NH4OH and KAl (SO4) 2 and the second set of reactants is MgSO4 and NH4OH, is either reaction considered a synthesis reaction as labeled in the laboratory? Why or why not?

How many grams of water are needed to react with 485 g of calcium carbide

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. True False

What happens when an electric field is applied to a very polar molecule?

Which particles have approximately the same mass?

Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect