How many grams of oxygen are needed to react with excess methane in the following reaction, in order to produce 325 kJ of energy? CH4 + 2 O2 CO2 + H2O ΔH = -890.4 kJ

The first element on the periodic table of elements is carbon. a. true b. false

Asample of air with a volume of 2.20m3 at a pressure of 105 kpa and a temperature of 30c is cooled to 10c and the pressure is reduced to 75.0 kpa. what is the new volume? 6.9 1.34 2.56 43.0 2.88

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o