When 2 grams of hydrogen (h2) react with 32 grams of oxygen (o2) the reaction yields hydrogen peroxide (h2o2). how many grams of h2o2 are produced in the

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

What is the correct lewis structure for chloroform chcl3

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