What is used to describe the conditions of a reaction at equilibrium? O A. A reaction-rate constant
O B. An activation energy
O C. An ideal gas constant
O D. An equilibrium constant
SUBM

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?