WebCalculate the molar mass of H2O in grams per mole or search for a chemical formula or substance. ... Mass Percent: 11.190%. Element: Oxygen Symbol: O Atomic Mass: 15.9994 # of Atoms: 1 ... 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 ... WebMass of oxygen atoms = 16 × 0.2 = 3.2 g. (b) Mole of water molecule = 0.5 mole. Molar mass of water molecules = 2 × 1 + 16 = 18 g. Mass of H2O = 18 × 0.5 = 9 g. 10. Calculate the number of molecules of sulphur (S 8) present in 16 g of solid sulphur. Ans. Molar mass of S8 sulphur = 256 g = 6.022 × 1023 molecule.
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WebJun 2, 2024 · Originally, a mole was the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12. That number of particles is Avogadro's Number, which is roughly 6.02x10 23.A mole of carbon atoms is 6.02x10 23 carbon atoms. A mole of chemistry teachers is 6.02x10 23 chemistry teachers. It's a lot easier to write … WebMar 16, 2024 · Mass of the substance = Number of moles x Molar mass of the substance (a) 0.2 mole of oxygen atoms Given mass of O = m = ? Molar Mass of O = M = 16g … surface cleaning cloth
Calculate the number of atom in 0.2mole of sodium - Brainly
WebMass of one mole of oxygen atoms = 16 g. Then, mass of 0.2 mole of oxygen atoms = 0.2 × 16g = 3.2 g WebOct 10, 2024 · calculate. the mass of one atom of oxygen. Academic Chemistry NCERT Class 9. Mass of 1 mole of oxygen = 16g. 1 mole of oxygen contains 6.022 × 10 23 oxygen atoms. Mass of 6.022 × 10 23 oxygen atoms = 16g. Mass of 1 oxygen atom = 16/ (6.022 × 10 23) Therefore, 1 atom of oxygen molecule weighs 2.65 × 10-23 grams. … WebMay 3, 2024 · Answer 10 people found it helpful OJASWI ANSWER Mass of 1 mole Oxygen atoms = 16 grams Mass of 0.2 mole oxygen atoms = 16 × 0.2 = 3.2 grams … surface cleaner for tile