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Finding molar mass starts with units of grams per mole (g/mol). mass of 6.023 X 10 23 molecules (one mole) of oxygen = 32g. Molar mass (in grams) is always equal to the atomic weight of the atom! Express the answer in scientific notation. Then convert from moles to grams: 1 mole elemental oxygen(16 grams O/1 mole) = 16 grams. So take the molecular mass of elemental oxygen - 16 grams per mole. 1 decade ago If the mass of one molecule of oxygen is 5.3x10 (to -23 power) grams, find the mass of 20,000 molecules-----? Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). Number of atoms in 1 mole of oxygen = 6.022 × 10 23 molecules . hope it helps you So. Therefore, 1 molecule of O 2 will weigh = 32/ 6.022×10 23 = 5.313 × 10 −23 g The formula of an oxygen molecule is O2 (2 is a subscript but now WA doesn't permit to write a subscript).15.9994 g/mol is the molecular mass of oxygen. A mole is a unit of measurement. For example, the molecule acetylene has molecular formula C 2 H 2, but the simplest integer ratio of elements is CH. in an experiment, a chemist collected about 32 grams of oxygen molecules in a gas syringe. When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. assume that there are 6.02x10^23 molecules in the syringe. Because 6.022 × 10 23 molecules of O 2 weigh 32 g . The molecular weight of the oxygen atom is 16 g/mol, however the oxygen molecule [math]O_2[/math] is 32 g/mol. (write your answer in scientific notation. The solution to this sort of question is to understand the units of molecular weight and think. So, the molecular mass of O 2 will be 2 X 16u = 32u. 1 mole of oxygen is 6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g What is the molar mass (g/mole) of oxygen? The molecular mass can be calculated from the chemical formula and is expressed in conventional atomic mass units equal to 1/12 of the mass of a neutral carbon-12 (12 C isotope) atom. One mole equals 6 x 10^23 atoms/molecules/whatever. Weight of 1 mole of oxygen molecules = 32 g of oxygen . Thus, mass of 1 mole of oxygen is = 32gm round the coefficient to the nearest hundredth) and calculate the mass of one oxygen atom if an oxygen molecule consists of 2 atoms. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. (1 u is equal to 1/12 the mass of one atom of carbon-12) Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol. In a molecule of oxygen, there are two oxygen atoms and it is denoted by O 2. Atomic mass of oxygen = 16gm Molar mass of oxygen = (16×2)gm =32gm Mass of 1 mole of any molecule is equal to its molar mass. Click hereto get an answer to your question ️ Rearrange the following in the order of increasing mass and choose the correct order (Atomic mass, N = 14,O = 16,Cu = 63 )(I) 1 molecule of oxygen(2) 1 atom of nitrogen(3) 1 × 10^-10gm molecule of oxygen(4) 1 × 10^-10gm of copper Weights of atoms and isotopes are from NIST article. Most elemental gases, certainly the gases with any chemistry, are BINUCLEAR, and consist of TWO covalently bound atoms. And think dihydrogen, dinitrogen, dioxygen, and dihalogen. round the coefficient … Oxygen's atomic weight is 16.00 amu. (write your answer in scientific notation. Thus, the molar mass that is the mass of 6.023 X 10 23 molecules of oxygen will be 32g. In one mole ) = 16 grams per mole oxygen is = 32gm weight of chemical! Simplest integer ratio of elements is CH isotopes are from NIST article weights of in. 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