At the same temperature and pressure, 1.00 moles of H2 gas occupies 650 mL. How many moles of H2
have a volume of 800 mL?
a 2.46mol
b 1.23 mol
C 1.58mol
d 0.786 mol

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n