4. A sample containing 10.0 mL of 0.300 M H2C2O4 is mixed with 5.00 mL 0.0500 M KMnO4. The purple color of the permanganate disappears after 37.5 s. a. Calculate the initial concentrations of KMnO4 and H2C2O4 in the mixture. (Hint: use the dilution equation. What is the final volume of the solution?)

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

When the mercury level in a barometer decreases that atmospheric pressure has

How is electrolysis most commonly used to produce an energy source? a - splitting water molecules produces oxygen, which organisms breathe to fuel their bodies. b - splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells. c - splitting carbon dioxide molecules produces coal, a form of carbon that can be burned to produce heat. d - splitting carbon dioxide molecules produces natural gas, which can be burned to generate electricity in power plants.