At would be the saturation concentration (mole/l) of oxygen (o2) in a river in winter when the air temperature is 0°c if the henry's law constant at this temperature is 2.28 × 10-3 mole/latm

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.

What is the effect of returning nuclear reactor cooling water back into bodies of water?

If you burn 46.6 g of hydrogen and produce 416 g of water, how much oxygen reacted