how many moles of water does a raindrop contain?
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Density of Water One drop of water is 0.05 mL of water, so its mass would be 0.05 grams. One mole of water is 18.016 grams, so in 0.05 grams, in one drop, the number of moles is: moles of water in one drop = 0.05 grams x (1 mole/18.016 grams) moles of water in one drop = 0.002775 moles.
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Avogadro's number tells us there are 6.022 x 1023 molecules of water per mole of water. 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.
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This means that 1 mole of water weighs 18 grams. Therefore x = (6.5x1)/18 = 0.361 moles. We have 0.361 moles, so: 0.361 x 6.022141 x 10 = 2.174 x 10 molecules.
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A lot. 9.34g divided by 18g/mol (the molar mass of water) gets you about 0.52 moles, times Avogadro's number of 6.02x1023 = 3.13x1023 molecules.
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The molecular weight of water is 18 (2+16). This means that in 18g of water is one mole. So, in 10 moles, there is 60.23×1023 molecules or 6.023×1024 molecules of water.
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Answer and Explanation: Around 56 moles of water are there in 1.000 l at STP. It has been found that a single mole of a compound has a mass in grams equal to the molecular...
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The water has a molecular weight of 18. The liter of water has 1000 grams. The number of moles is 1000/18 = 55.556 moles.
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In total, there are 55.55 moles of water in 1 L of water. 1 mol of water (H20) = 18 g. Mass of 1 L of water = 1000 g.
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Divide the mass of water by the molar mass of water to get moles of water. 2.60 g H2 O / (18.00 g/mol H2 O) = 0.144 moles H2 O. Divide the mass of anhydrate by the molar mass of anhydrate to get moles of anhydrate.
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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.
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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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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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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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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.
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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. Moreover, if you'd laid down end to end each water molecule from a teaspoon full you'd end up with a length of 50 billion km or 10 times the width of our solar system.
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The accepted average volume of a drop of water is exactly 0.05 mL (20 drops per milliliter). It turns out there are over 1.5 sextillion molecules in a drop of water and more than 5 sextillion atoms per droplet.
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Example: If someone can fit 200 gram (ml) of water into their mouth, how many moles of water is this: 200 grams of water x 1 mole of H2O = 11 moles 18grams 4. To find how many molecules of water are in someone's mouth: A mole of anything has 6.02x 1023 particles (this is Avogadro's number).