Chandra wants to know how many moles are contained in 150. 0 g ccl4 (carbon tetrachloride). What quantity of ccl4 should she use to make this conversion? number of moles molecular mass molar mass mole ratio.

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.