how many molecules of water make up 5 moles?
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There are 6.022x10^23 water molecules per mole. To calculate for 5 moles, (2 H atom)/(H2O molecule) X (6.022x10^23 H2O molecules)/(mole) X 5 moles = 6.022x10^24.
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or 1 g of water contains (6.022 x 10^23)/ 18 water molecules and the number comes out to be 3.3455 x 10^22. So the number of water molecules present in 1 g of water is 3.3455 x 10^22.
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There are 6.022×1023⋅water molecules ... 3.50⋅mol×6.022×1023⋅mol−1≅21×1023 individual water molecules.
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Thus, for example, one mole of water contains 6.02214076×1023 molecules, whose total mass is about 18.015 grams – and the mean mass of one molecule of water is about 18.015 daltons. The mole is widely used in chemistry as a convenient way to express amounts of reactants and products of chemical reactions.
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Mass of 1 Mole of Water A mole of water molecules would be 2 moles of hydrogen atoms plus 1 mole of oxygen atoms. From the periodic table we see the atomic weight of hydrogen is 1.0079 and the atomic weight of oxygen is 15.9994.
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Therefore 5 molecules of water have 10 hydrogen atoms. Water is H2O so 5 Moles of water contains; 2 x 5 x 6.022140857 × 10^23 atoms of Hydrogen !
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18 gram of water approximately corresponds to 1 mole of water and 6.022 x 10^23 water molecules. Search for Avogadro's number for more information.
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1: Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms. A mole of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms.
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Figure 10.2. 1: Two water molecules contain 4 hydrogen atoms and 2 oxygen atoms. A mole of water molecules contains 2 moles of hydrogen atoms and 1 mole of oxygen atoms.
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At STP 1 mole of an ideal gas = 22.4 liters. Assuming that water vapor behaves as an ideal gas, then... 0.08929 moles H2O x 6.02x1023 molecules/mol = 5.4x1022 molecules = 5x1022 molecules (1 sig. fig.)
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One mole of water has a mass of 18 grams and a volume of 18 mL (as the density of water is 1 g per cm3). It contains Avogadro's number of molecules (6x 10^23). Thus 1 litre of water contains 1 / 18 x 1000 x 6 x 1^23 molecules (assume you can do the maths…)
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There are 2 hydrogen atoms in 1 molecule of water. 1 mole of H2O contains 2 moles of H, and each mole of H contains 6.02x10^23 atoms of H.
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18.01528 grams of water per mole of water. From there, you can go from moles to molecules using 6.022×1023 molecules in a mole.
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It is equal to Avogadro's number (NA), namely 6.022 x1023. If we have one mole of water, then we know that it will have a mass of 2 grams (for 2 moles of H atoms) + 16 grams (for one mole O atom) = 18 grams. Since we only have 0.001 grams, that means that we have NA * (0.001/18) = 3.35*1019 molecules of water!
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We assume you are converting between moles Water and gram. You can view more details on each measurement unit: molecular weight of Water or grams The molecular formula for Water is H2O. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Water, or 18.01528 grams.
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So, next we calculate how many molecules there are in a drop of water, which we determined contains 0.002775 moles: molecules in a drop of water = (6.022 x 1023 molecules/mole) x 0.002275 moles. molecules in a drop of water = 1.67 x 1021 water molecules.
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18 gram of water approximately corresponds to 1 mole of water and 6.022 x 10^23 water molecules.