How many moles are in 2.3 grams of phosphorus




















Multiply this by the inverse of the molar mass of P Log in. Atoms and Atomic Structure. Molecular Mass.

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You can do the reverse unit conversion from moles 2. 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. A common request on this site is to convert grams to moles.

To complete this calculation, you have to know what substance you are trying to convert. The reason is that the molar mass of the substance affects the conversion.

This site explains how to find molar mass. We use the most common isotopes. This is how to calculate molar mass average molecular weight , which is based on isotropically weighted averages. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes.

For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass.

Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. These relative weights computed from the chemical equation are sometimes called equation weights. Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.

If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight.



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