Acertain mass of gas in a 2.25l container has a pressure of 164 kpa. what will the new pressure be if the volume of the container is reduced to 1.50 l and the temperature stays constant?

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)