For the homologous series of alcohol, is it just alcohol, methanol, and so on and so fourth, or is it alcohol, methanol, ethanol, and then propan-1-ol? what does the member that has a dash means? I looked for it and ended up getting confused.

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.

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?

How many moles are in 123.0 grams of kclo4?