Calculate the number of milliliters of 0.544 M NaOH required to precipitate all of the Co2+ ions in 102 mL of 0.462 M CoBr2 solution as Co(OH)2. The equation for the reaction is: CoBr2(aq) + 2NaOH(aq) Co(OH)2(s) + 2NaBr(aq)

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

How many molecules are found in 1.32 mol of nacl?

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?