What is the mole fraction of KCI in an aqueous solution that contains 26.3% KCI (weight/weight %)? molar mass
KCI: 74.55 g/mol
H20: 18.016 g/mol

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

Match the formula for the following compound:   magnesium sulfate heptahydratemgs·7h2omg2so4·7h2omg(so4)2·7h2omgso4·7h2o