how many molecules of water does it take?
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Using Avogadro's Number So, next, we calculate how many molecules there are in a drop of water, which we determined: molecules in a water drop = (6.022 x 102^3 molecules/mole) x 0.002275 moles. molecules in a water drop = 1.67 x 10^21 molecules of water.
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The liter of water has 1000 grams. The number of moles is 1000/18 = 55.556 moles. The number of molecules is therefore 6.022*1023 * 55.556 = 3.346*1025 molecules. The number of atoms is 3 times larger because each molecule has three atoms, so there are 1.0038*1026 atoms in a liter of water.
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The number of molecules is therefore 6.022*1023 * 55.556 = 3.346*1025 molecules. The number of atoms is 3 times larger because each molecule has three atoms, so there are 1.0038*1026 atoms in a liter of water. Now we know enough to answer your question. A typical human head weighs about 10 - 12 pounds.
353100
Avogadro's number tells us that there are 6.022 x 10^23 molecules of water per mole of water. So, next, we calculate how many molecules there are in a drop of water, which we determined: molecules in a water drop = (6.022 x 102^3 molecules/mole) x 0.002275 moles.
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A teaspoon of water (about 5 mL) contains 2×10 23 water molecules, but each water molecule is comprised of 3 atoms: two hydrogen and one oxygen.
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So, next, we calculate how many molecules there are in a drop of water, which we determined: molecules in a water drop = (6.022 x 102^3 molecules/mole) x 0.002275 moles. molecules in a water drop = 1.67 x 10^21 molecules of water.
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Chemical Formula of Water There are two atoms of hydrogen and one atom of oxygen in each water molecule, making the formula H2O. So, each molecule of water contains 3 atoms.
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In another way; there are 1.67 sextillion water molecules in a water droplet. Now, the number of atoms in one drop of water is 3x the number of molecules: atoms in a drop of water = 3 atoms/molecule x 1.67 x 1021 molecules. atoms in a drop of water = 5.01 x 1021 atoms.
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If we want to make 5 molecules of water, we need 10 hydrogen atoms and 5 oxygen atoms. The ratio of atoms we will need to make any number of water molecules is the same: 2 hydrogen atoms to 1 oxygen atom.
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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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molecules in a water drop = (6.022 x 102^3 molecules/mole) x 0.002275 moles. molecules in a water drop = 1.67 x 10^21 molecules of water.
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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.
1120292
Using Avogrado's Number 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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There are two atoms of hydrogen and one atom of oxygen in each water molecule, making the formula H2O. So, each molecule of water contains 3 atoms.
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The chemical formula for water is H2O which means that every molecule of water has 2 atoms of hydrogen (H) and one atom of oxygen (O). Here comes the key part.
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How many molecules of H2O are present in 0.500 mol of water? 1 mol of water contains 6.022 × 1023 H2O molecules Therefore 0.500 mol contains 0.500 × (6.022 × 1023) = 3.01 × 1023 H2O molecules.
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There are 8 times as many atoms in a teaspoonful of water as there are teaspoonfuls of water in the Atlantic ocean!! A teaspoon of water (about 5 mL) contains 2×10 23 water molecules, but each water molecule is comprised of 3 atoms: two hydrogen and one oxygen.