At 20°c, this element is present in solid-state. The location of calcium elements in the modern periodic table is the 2nd group,4th period, and s block. This site explains how to find molar mass. The chemical symbol of calcium is Ca.Its atomic number is 20 and its atomic mass is 40.078 g/mol. 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. The most abundant metallic element in the human body, it is an essential part of bones and teeth and has many physiological functions (see calcium deficiency tooth). Exposed surfaces form oxides and nitrides. ![]() It is a fairly hard, silvery-white metal. The origin of the name comes from the Latin word calx meaning lime. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass.Ī common request on this site is to convert grams to moles. calcium, Chemical element, one of the alkaline earth metals, chemical symbol Ca, atomic number 20. Relative atomic mass: 40.078 (4) Calcium was discovered by Sir Humphry Davy (GB) in 1808. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. 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. 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. Thus, calcium has a molar mass of 40.08g/mol. On the periodic table, the molar mass (atomic weight) of calcium is listed under its chemical symbol (Ca). Calcium Carbonate molecular weight Molar mass of CaCO3 100. ![]() ![]() These relative weights computed from the chemical equation are sometimes called equation weights.įinding molar mass starts with units of grams per mole (g/mol). 40.08 g/mol You can use the periodic table if it is given to you. 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.įormula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. 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.
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