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
The 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
The 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.
A 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.
3.024 grams because 1.008 g/mol*3 mol. Moles cancel out.
3 x 18 = 54g water in 3 moles
The answer is 1,5 moles oxygen.
Approx. 10e23 molecules of water.
This mass is 64 g.
54g
36 g (6.02 x 1023 at / 12.01 g) = 1.8 x 1024atoms
The value is 1,328.10e-3 moles.
The number of molecules is 15,055 352 142 5.10e23.
3
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.
36 g (6.02 x 1023 at / 12.01 g) = 1.8 x 1024atoms
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
The value is 1,328.10e-3 moles.
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.
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
The number of molecules is 15,055 352 142 5.10e23.
3
H2O consists of two Hydrogen and one Oxygen. Three sets of these would mean 9 atoms in your three molecules of water.
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.
The mass of sodium is 22,91.10e-23 g.
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).
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).