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Molar mass of CO = 28.0101 g/mol This compound is also known as Carbon Monoxide. Convert grams CO to moles or moles CO to grams Molecular weight calculation: ›› Percent composition by element
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Did you mean to find the molecular weight of one of these similar formulas? ›› More information on molar mass and molecular weightIn 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. The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. 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. If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. 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. 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. 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. 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. Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula.
What is the Molar Mass of CO? Explanation: Molar mass of a substance = Mass of one mole of the substance In order to calculate it the atomic masses (or atomic weights) of the elements involved must be known. This information is often available on the periodic table. CO is carbon monoxide, and is composed of a single atom of each carbon (C) and oxygen (O). Thus, to calculate the molar mass of CO we must know the atomic masses of carbon and oxygen. Atomic mass of carbon = 12.01 amu Atomic mass of oxygen = 16 amu Atomic mass of CO = atomic mass of carbon + atomic mass of oxygen = 12.01 + 16 = 28.01 amu As the molar mass of any substance is its mass in grams of 1 mole of that substance, it is expressed in g/mol. Therefore, the molar mass of CO is 28.01 g/mol.
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Share the information with your friends Shana M. 3 Answers By Expert Tutors by looking at the periodic table for carbon and oxygen One finds that oxyen is 16 g/mole and carbon is 12.01 g/mole. Since one mole of co is made of 1 mole of Carbon and 1 mole oxygen we simply add the two atomic weights to find co is 28.01 g/ mole.
You should have a periodic table of the elements in your textbook, or perhaps on the wall of your classroom. It is a chart that displays important information about all of the elements that make up our universe, including a few at the end that scientists have been able to create from other elements. The mass (or weight) of an element is shown in most periodic tables, beneath the symbol. To find the molecular weight of a compound (a combination of elements), you just add the weights of the elements of the elemnts of which it consists. The weights are given in grams per mole. A mole is a very large quantity of individual items (6.02 x 1023). We use the term "mole" so that we don't have count all of those individual atoms or molecules (it's sort of like using "miles" to specify long distances, instead of using "inches" to describe the same distance). You asked about CO, which is carbon monoxide, a molecular compound that has one atom of carbon (C) and one atom of oxygen (O). From the table, you can see that C (element number 6) has a mass of 12.01 grams per mole, and O (element number 8) has a mass of 16.00 g/mole. The molecular mass of CO is 12.01 + 16.00 or 28.01 g/mol. Another common compound with the same elements is CO2 (carbon dioxide). The difference is that carbon dioxide has two oxygen atoms instead of just one. To find its molecular weight, you would add 12.01 + 2(16.00) = 44.01 g/mol.
Will M. answered • 12/04/12 Chemistry professor who actually wants to help!!!
The periodic table will give you the answers you are looking for here. The molar mass of oxygen is 16.00, and Carbon is 12.01. Adding these together you get a total of 28.01g/mol, rounding everything to two decimal places. |