What is the concentration of K+ ion in solution, in mmol/L? Mass K2Cr2O7 = 2.4 g
Mass water = 310 g
Amount K2Cr2O7 = 8.2 × 10-3 mol
Molality = 0.026 mol/kg
Mole fraction K2Cr2O7 = 4.7 × 10-4
Concentration of K2Cr2O7 = 26 mmol/L

Drive down any three characteristic of modern periodic table

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound