how many percent of hydrogen (H) is present in water (H2O)? Methane (CH.Molar Mass = 16.04 g/mol) is one of the greenhouse gases. If 32.08 g of CH is released in the atmosphere, how many molecules of CH, are added in the atmosphere 2. The Fuel Value of the hydrogen-containing fuels depends on the mass percentage of Hydrogen (H) correct amount of substance present in a sample. A. 124 B. 11% C. 13% B. 1.20 x 10 C. 6.02 x 10 D. 6.02 x 10 A 1.20 x 1024 Which compound has the highest fuel value? 1 Ethane (C2H6) C-79.89% H=20.11% 2 Propane(C3H8) C-81.71% H=18.29% 3 Ethanol (C2H5OH C=52.14% H=13.13 O=34.73 B. 2 C3 D. 2 and 3
