If you have 155 mL solution of a .762 M FeCl3 solution, how many moles of FeCl3 are contained in this sample?

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction