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In chemisty metric weights are used rather than imperial, it makes things a lot simpler.
Mole's are easy to calculate all you need to remember is that 1mol is equal in grammes to the molecular mass of the molicule. So water is 2 Hydrogen atoms each of 1.008 Atomic Mass unit (AMU) and 1 Oxygen atom of 15.999 AMU.
So (2x1.008)+15.999=18.015 AMU therefore one mol of water is 18.015g.
Two points though.
1: As it is difficult to weigh out to one thousandth of a gramme you often round up especially when using water as volume is often used instead as 1Cm3 is appprox 1g
2:AMU's are approximate weights as different isotopes have different AMU's, therefore 1 mol of water is approx 18.015g.
What else can I help you with?
How many moles are in one molecule?
MolesOne mole is 6.02 × 1023 of anything. One mole of atoms is 6.02 × 1023 atoms, one mole of rice is 6.02 × 1023 grains, one mole of shoes is 6.02 × 1023 shoes. You get the picture? One mole of molecules is 6.02 × 1023 molecules.
How many moles are present in 500.00 g of H2O?
For this you need the atomic (molecular) mass of H2O. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel. H2O= 18.0 grams500.0 grams H2O / (18.0 grams) = 27.8 moles H2O
How many moles are in 3.52E20 molecules of water?
1 mole of substance contains 6.02 x 1023 of its constituent particles. Accordingly, there would be 5.85 moles (of the substance) in a sample containing 3.52 x 1024 particles.
If you had a mole of MM's how many times could cover the surface of the earth?
7 times
How many molecules are in 3.5grams of H2O?
There are 23 atoms in 6.0 g of water. Using this formula (6 g H2O)(1 mol H2O / 18 g H2O) = 1/3 mol H2O (1/3 mol H2O)(2 mol H / 1 mol H2O)(6.022 x 10^23 atoms H / 1 mol H) = 4.0 x 10 therefore 23 atoms.
How do you determine the number of molecules of water you swallow from a cup of water?
A cup is 8 fluid ounces. And 8 ounces is about 236.6 grams of water.There are 18 grams of water in one mole of water, and a mole of anything contains Avogadro's number of molecules of that compound. That's 6.02 x 1023 molecules.Our (236.6 grams of water) divided by (18 grams per mole) = 13.14 moles of waterOur (13.14 moles of water)(6.02 x 1023 molecules per mole) = 7.91 x 1024 molecules in the 8 ounce glass of water.We had 8 ounces of water. We converted to grams. Then we looked up water to see how many grams of water there were in a mole of water. Then we found out how many moles we had in our cup of water. Then, because we knew how many molecules of water were in a mole (we know because a mole of anything is Avogadro's number of particles of that substance), we multiply to find out how many molecules of water were in the cup of water.That's how we found that there are 7.91 x 1024 molecules in a cup of water.
Is atomic mass found in ounces or pounds?
If ounce-mole - in ounces if pound-mole - in pounds and so on
How many CO2 moles comprise one mole of CO2?
6.02 ten to the power of 23
How many molecules of H2O equals 1 mole of H2O?
the rule for solving amount of molecules is N(molecules)=6x10^23 x n(amount of mole) therefore there are 6x10^23 molecules in 1 mole of anything or in this case of H20
How many molecules of water will be present in half mole of water?
6.022 * 10^23 = 1 mole 3.011 * 10^23 = 1/2 a mole
1 mole equals how many l?
One mole is Avogadro's number of anything. If you had a mole of donuts, you'd have 6.02 x1023 donuts.
How many moles of water are present in half mole of water?
Your question is irrelevant. I think that you were trying to find the number of molecules present in half a mole of water. 1 mole of water contains 6.023 * 1023 number of molecules. Hence half mole contains half of that number of molecules which is 3.0115*1023.
How many grams in one mole of ice?
One mole of ice, which is the same as one mole of water, has a molar mass of approximately 18 grams/mol.
How many moles of water will be produced from 1 mole of octane?
9
How many atoms of hydrogen are there in the mole of H2O molecules?
In one mole of water (H2O), there are 2 moles of hydrogen atoms (H) due to the formula H2O having 2 hydrogen atoms. Since 1 mole of hydrogen contains Avogadro's number of atoms (6.022 x 10^23), in a mole of water there are 2 times Avogadro's number of hydrogen atoms, which equals 1.2044 x 10^24 atoms.
How many grams of water is equal to 2 mole of water?
2*18.01528=36.03056 g
How many water molecules are in a mole of water?
There are approximately 6.022 x 10^23 water molecules in a mole of water. This value is known as Avogadro's number and represents the number of particles in one mole of a substance.
