To determine whether the amount of H2 in the lab is dangerous, we first need to know how much hydrogen gas is present in the room in units of percent by volume. For this particular problem, we cannot exactly determine since we do not know the total volume of the room. Hope this answers the question.
M=7M(H₂O)
M=7*18.015 g/mol = 126.105 g/mol
A. As wavelength increases, radiant energy and frequency increase.
It is better for the whales to go where the whales have the ability to dive longer and deeper to find cooler water.