Sample paper class 9
Jan 22, 2019 · The molecular formula is an expression of the number and type of atoms that are present in a single molecule of a substance. It represents the actual formula of a molecule. Subscripts after element symbols represent the number of atom Methane (CH 4) is the second most important greenhouse gas. CH 4 is more potent than CO 2 because the radiative forcing produced per molecule is greater. In addition, the infrared window is less saturated in the range of wavelengths of radiation absorbed by CH 4, so more… Molecular formulas are derived by comparing the compound’s molecular or molar mass to its empirical formula mass. As the name suggests, an empirical formula mass is the sum of the average atomic masses of all the atoms represented in an empirical formula. The chemical formula CH4 represents methane. The atomic weight of carbon is 12.01 grams per mole. Carbon comprises about 74.86 percent of the molar mass of each molecule of methane. The molar mass and molecular weight of CH4 + CO2 is 60.05196.