0
The molecular mass of H2O is 2(1.0) + 16.0 = 18.0Amount of H2O = 3/18.0 = 0.167mol
The Avogadro's number is 6.02 x 10^23
Number of molecules of H2O in 3g sample = 0.167 x 6.02 x 10^23 = 1.00 x 10^23
Wiki User
∙ 9y ago
Manzoor Shaikh
Wiki User
∙ 9y agoThe molecular mass of water is 18. Therefore there is 1 mol of water molecules in 18 grams. In 3g, there are 0.17mol of water molecules.
The molecular mass of H2O is 2(1.0) + 16.0 = 18.0Amount of H2O = 3/18.0 = 0.167mol
The Avogadro's number is 6.02 x 10^23
Number of molecules of H2O in 3g sample = 0.167 x 6.02 x 10^23 = 1.00 x 10^23
Wiki User
∙ 9y agoThe molecular mass of water is 18. Therefore there is 1 mol of water molecules in 18 grams. In 3g, there are 0.17mol of water molecules.
Wiki User
∙ 10y agoA gram-mole is one gram times the molecular weight.
For water the molecular weight is 2 of hydrogen and 1 of oxygen = 2x1+1x16 = 18 so a gram-mole of water weighs 18 grams.
Wiki User
∙ 9y ago3.024 grams because 1.008 g/mol*3 mol. Moles cancel out.
Wiki User
∙ 13y ago3 x 18 = 54g water in 3 moles
Wiki User
∙ 8y agoThe answer is 1,5 moles oxygen.
Wiki User
∙ 7y agoApprox. 10e23 molecules of water.
Wiki User
∙ 7y agoThis mass is 64 g.
Wiki User
∙ 11y ago54g
Add your answer:
Earn +20 pts
How many molecules of water are present in 36.0 g of H2O?
36 g (6.02 x 1023 at / 12.01 g) = 1.8 x 1024atoms
How many moles are there in 2.35 x 1024 molecules of water?
The value is 1,328.10e-3 moles.
How many atoms are in 2.25 mol of water?
The number of molecules is 15,055 352 142 5.10e23.
How many molecules of water are formed when the following equation is balanced Al2O3 plus HCl AlCl3 plus H2O?
3
How many moles of water are there in 100 grams of water?
First you find the Molar Mass of water using the values on the periodic table.2 Hydrogen + 1 Oxygen2*1.01 + 16.00 = 18.02 g/molThen using factor-label to cancel out units(100g H2O)*(1 mol H2O / 18.02 g H2O) = 5.54938957 molSo the number of moles in 100g of H2O is about 5.55 moles.Hope that helps.
How many molecules of water are present in 36.0 g of H2O?
36 g (6.02 x 1023 at / 12.01 g) = 1.8 x 1024atoms
How many molecules of CO2 are there in 18 grams?
First write out the equation and balance it. Then look at the ratio of C8H10 to CO2 produced in the reaction (hint: use molecular weights). For example: 2A = 1B + 1C where A =4, B=5, and C=3 so, for every 8g of A you get 5g of B 20g of B will yield 20 x 5/8 = 12.5g
How many moles are there in 2.35 x 1024 molecules of water?
The value is 1,328.10e-3 moles.
How many molecules are in 10 grams?
A mole of water is about 18 grams or 18 milliliters of water.A mole of water has 6.022 x 10^23 water molecules. And 10.0 grams of has 3.345 × 10^23 water molecules. And there are 3 total atoms in water molecules, which is H2O. (3.34 × 10^23)*3=1.006 × 10^24 Which means that 1x10^24 atoms are in 10.0 grams of water.
How many moles are in 35.1 grams of water?
To teach you how to do this problem: 1. Look at the Periodic Table. O =16 grams/mole, H =1.01 grams/mole 2. Calculate the Molecular Weight of Water. 1*O + 2*H: 16+2.02=18.02g/mole 3. Divide the mass of what you have by the Molecular Weight: 35.1g H2O/(18.02 g H2O/mole H2O) 4. The units g H2O cancel leaving you with mole H2O. 5. 35.1 grams H2O= 1.95 moles H2O
How many atoms are in 2.25 mol of water?
The number of molecules is 15,055 352 142 5.10e23.
How many molecules of water are formed when the following equation is balanced Al2O3 plus HCl AlCl3 plus H2O?
3
How many molecules are present in 3 h20?
H2O consists of two Hydrogen and one Oxygen. Three sets of these would mean 9 atoms in your three molecules of water.
If 40 grams of sodium hydroxide and 3 grams of hydrogen gas are produced when 27 grams of sodium metal is consumed how many grams of liquid water must have been added?
27 g Na + H2O = 40 g NaOH + 3 g H2. Law of Conservation of Mass. The reactants must have the same number of grams of the products. 40 + 3 = 43. 43 - 27 = 16 g H2O.
How many grams of sodium are in 3 molecules of sodium carbonate?
The mass of sodium is 22,91.10e-23 g.
How many oxygen atoms are in water molecules?
3 oxygen atoms in three molecules of water.- There are 3 total atoms in water, which is H2O. There are 2 hydrogen atoms (H), and 1 oxygen atom (O).
How many oxygen atoms are in molecules of water?
3 oxygen atoms in three molecules of water.- There are 3 total atoms in water, which is H2O. There are 2 hydrogen atoms (H), and 1 oxygen atom (O).
