9. When Priestly put a mouse in his new air, he was to see it lived as a mouse lives in normal air.
2x longer
3x longer
0 2x shorter
3x shorter

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)

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )