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You calculate it by using Avogadro's number: 6.022 x10 23 which is one mole of substance.
1.00 x 1024 divided by 6.022 x 1023 = 10 divided by 6.022 = 1.661 mol H2O
Use the molar mass of water (18.02 g mol-1) to get to the mass in grams.
18.02 g x 1.661 mol = 29.93 g H2O
Ashlee Farrell
Wiki User
∙ 14y agoHydrogen has an approximate molar mass of 1.0 g/mol and oxygen has an approximate molar mass of 16 g/mol. By looking at the formula for water, H2O, we see that for every oxygen atom in the molecule, there are 2 hydrogen molecules. Therefore, the molar mass of water equals 2*1.0g/mol(hydrogen) + 16g/mol(oxygen) = 18 g/mol of H2O.
Wiki User
∙ 13y agoSince:-
mol = mass/Mr and water has an Mr of 18
then:-
2 x 18 = 36g
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Find the mass in grams of 1.54 moles of H2O?
1.54 moles H2O (18.016 grams/1 mol H2O ) =27.7 grams
What is the mass in grams of 3 moles of water molecules?
249.72 g/mol
How many liters of water can be made from 5 L of oxygen gas and an excess of hydrogen?
55 grams O2 × (1 mol O2 ÷ 32 g O2) × (2 mol H2O ÷ 1 mol O2) × (22.4 L ÷ 1 mol H2O) = 77 L H2O(g)In the liquid form, it works out to just under 62 milliliters.
What is molecular mass of h2so4?
The mass in grams of one mole H2SO4 is: 98.079 g/mol (molar mass)The mass in grams of one molecule H2SO4 is (molecule mass):98.079 (g/mol) / 6.02214*10+23(molecules/mol) = 16.286*10-23 g/molecule
How many atoms hydrogen are in 18 grams of water?
to get the answer, take the mass you have divide by the molecular mass of the compound which in water's case happens to be 18g. 18g x 1mol/18g = 1 mole or 6.022x1023 molecules of H2O
Find the mass in grams of 1.54 moles of H2O?
1.54 moles H2O (18.016 grams/1 mol H2O ) =27.7 grams
What is 1 mol of H2O in grams?
in order to find the mass of H20 you need the molar mass which is 18.01g/mol and to calculate the mass you just multiply by the number of moles. 18.01 * .20 = 3.60g
How many grams of water are produced by reacting 15.8 g H2 with excess oxygen?
24g H2 x 1 mol H2 x 2 mol H2O x 18g H2O/ 2g H2 x 2 mol H20= 216 g H2O 160g O2 x 1 mol O2 x 2 mol H2O x 18g H2O/ 32g O2 x 1 mol O2 x 1 mol H2O= 180 g H2O
What is the mass of 2.00 mol h2o?
0.8 moles HNO3 (63.018 grams/1 mole HNO3) = 50 grams nitric acid ===============
What is the mass in grams of 3 moles of water molecules?
249.72 g/mol
How many molar mass in g mol of dinitrogen pentoxide?
N2O5 Has a molar mass of 108.01 g/mol 1.73 mol x 108.01 g/mol = 187 grams
How many moles of hydrogen atoms are present in 25 grams of water?
For this you need the atomic (molecular) mass of H2O. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel. H2O= 18.0 grams2.5 moles H2O × (18.0 grams) = 45.0 grams H2O
How many grams of copper sulfate would you heat to produce 29.8g of water?
29.8g H2O = 1.66 mol H2O Molar Mass CuSO4 * 5H2O = 249.6 g mol CuSO4 * 5H2O --> 5 mol H2O 249.6 g CuSO4 * 5H2O/1 mol CuSO4 * 5H2O Times * 1mol CuSO4 * 5H2O/5mol H2O Times* 1.66 mol H2O = 82.6 g CuSO4 * 5H2O
What is the mass in grams of 6.64 mol W?
mol = mass/Mr mol x Mr = mass Mr of tungsten is 183.84 so 1.2 x 183.84 = 220.61g
How many grams of copper sulfate pentahydrate CuSO4 5H2O would you heat to produce 29.8 g of water?
29.8g H2O = 1.66 mol H2O Molar Mass CuSO4 * 5H2O = 249.6 g mol CuSO4 * 5H2O --> 5 mol H2O 249.6 g CuSO4 * 5H2O/1 mol CuSO4 * 5H2O Times * 1mol CuSO4 * 5H2O/5mol H2O Times* 1.66 mol H2O = 82.6 g CuSO4 * 5H2O
How many molecules are in 6.9 g H2O?
The number of molecules is 2,308.10e23.
What is the mass in grams of 5.00 x 10 to the 2nd power water molecules?
The molar mass of H2O =(2 atoms H x 1.00794g/mol H) + (1 atom O x 15.9994g/mol O) = 18.0152g/mol H2O1 mole of H2O = 18.0152g H2O1 mole of H2O molecules = 6.022 x 1023 molecules H2OConvert molecules to moles.5.00 x 102g H2O molecules x (1mole H2O/6.022 x 1023 molecules H2O) =8.31 x 10-22 mole H2OConvert moles to grams.8.31 x 10-22 mole H2O x (18.0152g H2O/1mole H2O) = 1.50 x 10-20g H2OAnswer: The mass in grams of 5.00 x 102g H2O molecules = 1.50 x 10-20g H2O
