Why is the use of natural gas as a full becoming more common

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

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 grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work