The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.įinding molar mass starts with units of grams per mole (g/mol). If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. These relative weights computed from the chemical equation are sometimes called equation weights. This site explains how to find molar mass.įormula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. The reason is that the molar mass of the substance affects the conversion. To complete this calculation, you have to know what substance you are trying to convert. Sulfur Dioxide Liquid - Thermal Propertiesĭensity, specific heat, thermal conductivity and more.In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.Ī common request on this site is to convert grams to moles. The definition of STP - Standard Temperature and Pressure and NTP - Normal Temperature and Pressure. STP - Standard Temperature and Pressure and NTP - Normal Temperature and Pressure Specific heat of Nitrogen Gas - N2 - at temperatures ranging 175 - 6000 KĬhemical, Physical and Thermal Properties of Oxygen - O 2. Natural gas consumption for equipment like boiling pans, ovens, cookers, kettles and more. Phase diagram included.ĭefinition and molecular weight (molar mass) of some common substances. Specific heat of Hydrogen Gas - H2 - at temperatures ranging 175 - 6000 K.Ĭhemical, Physical and Thermal Properties of Hydrogen - H2.īoiling temperatures for common liquids and gases - acetone, butane, propane and more.Ĭhemical, Physical and Thermal Properties of Methane - CH 4. Specific gravities of air, ammonia, butadiene, carbon dioxide, carbon monoxide and some other common gases.Ĭhemical, Physical and Thermal Properties of Helium - He. Molar specific heats for some common gases at constant volume. Gases - Explosion and Flammability Concentration Limitsįlame and explosion limits for gases like propane, methane, butane, acetylene and more. tolerable concentration levels for some industrial gases.Ībsolute (dynamic) viscosities of some common gases. Online density converter with commonly used units.ĭangerous vs. Potential biogas production from animal manure.Ĭhemical, physical and thermal properties of n-Butane.ĭensities of common products - Imperial and SI-units. Typical composition of biogas produced from household waste. Specific heat of Benzene Gas - C6H6 - at temperatures ranging 250 - 900 K.Ĭarbon - Nitrogen ratios for biogas produced from various raw materials. Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.ĭry air is a mixture of gases where the average molecular weight (or molar mass) can be calculated by adding the weight of each component.īenzene Gas - Specific Heat vs. Definitions and convertion calculators.Īir, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves. You can divide pounds per cubic foot by 32.2 for a rough value in slugs.ĭensities of solids, liquids and gases. Note that even if pounds per cubic foot is often used as a measure of density in the U.S., pounds are really a measure of force, not mass.
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