Consider the reaction below. 2H2O mc030-1. Jpg 2H2 O2 How many moles of hydrogen are produced when 6. 28 mol of oxygen form? 3. 14 mol 6. 28 mol 12. 6 mol 25. 2 mol.

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.