If you drop mg into hcl, you will evolve hydrogen gas. if you perform this reaction over water at a temperature of 298.15 k at a pressure of 0.977 atm, and the vapor pressure of water at this temperature is 0.0313 atm, what is the pressure of hydrogen?
a.718.7 mm hg
b.760.0 mm hg
c.742.5 mm hg
d.766.3 mm hg

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.

__can be defined as which velocity changes

What does the mass of 0.7891 mol of ferric oxide (fe2o3)