how many moles of water can be made from 100g of hydrogen?
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Hydrogen has a molar mass of 1g/mol, so 100 moles of hydrogen atoms are in 100g. As there are two hydrogen atoms per molecule of water, 50 moles of water are produced.
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How many hydrogen atoms are present in 75.0 g of H2O? 7.53 × 1024 atoms.
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one mole of water contains 6.02 x 1023 MOLECULES of water. But each molecule of water contains 2 H and 1 O atom = 3 atoms, so there are approximately 1.8 x 1024 atoms in a mole of water.
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4 moles of hydrogen gas will produce 2 moles of water vapor since carbon dioxide is in excess. Therefore you need twice as many moles of hydrogen gas: 61.2 moles of hydrogen gas is needed. Hope it helps.
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Answer and Explanation: There are 4 moles of hydrogen atoms in 36 grams of water, which is choice a.
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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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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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Number of moles=100g/ 18.02 g/ moles= 5.55 moles. drink.
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Hydrogen has a molecular mass of about 2 g/mole, so 18 g of hydrogen is 9 moles. One mole is 6.022 X 10^23 molecules, so the number of molecules in 18 g of hydrogen is 9X this, or approximately 54 X 10^23 = 5.4 X 10^24 molecules.
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Thus there are 2.77 moles of hydrogen in 25 g of water.
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For example, since one atom of oxygen will combine with two atoms of hydrogen to create one molecule of water (H2O), one mole of oxygen (6.022 × 1023 of O atoms) will combine with two moles of hydrogen (2 × 6.022 × 1023 of H atoms) to make one mole of H2O.
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In 1 mole of anything there are 6.022 × 10²³ molecules (Avogadro's constant), so in 10 g of water there are (0.556 mol)(6.022 × 10²³ molecules/mol) = 3.35 × 10²³ molecules. (Note that it does not matter whether you have ice, liquid water, or steam.
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Water has a molar mass of 18.01528 g/mol≈18 g/mol . Since water has a chemical formula of H2O , there will be 2 moles of hydrogen in every mole of water. In one mole of water, there will exist approximately 6.02⋅1023 water molecules.
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There are two hydrogen atoms per water molecule. 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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There are 6.022×1023 molecules in a mole. There are 18.01528 grams of water per mole of water. These can be figured out using the concept of moles and molecular weight.
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The SI base unit for amount of substance is the mole. 1 grams Hydrogen is equal to 0.992122546977 mole.
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Mass of 1 Mole of Water How much water is that to most people? Water (H2O) is made from 2 atoms of hydrogen and 1 atom of oxygen. A mole of water molecules would be 2 moles of hydrogen atoms plus 1 mole of oxygen atoms.