how many moles of water are there in 1.00 x 10 raise to power 24 molecules of water?
2007-03-26 04:53:50 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
As the molar mass of water is 18g/mol. The number of moles of water in 100g is 100/18 = 5.556 moles.
One mole of water has Avogadro's number of molecules =6.0221415 × 10^23. This means that 1 x 10^24 has 1 x 10^24/6.0221415 × 10^23= 1.6605 moles.
2007-03-26 05:01:11 · answer #1 · answered by The exclamation mark 6 · 0⤊ 0⤋
Divide mass of water by mass of one mole of water (18 g)
100 g / (18 g/mol) = moles H2O
1.00 x 10^24 molecules / (6.02 x 10^23 molecules/mole) = moles H2O molecules.
2007-03-26 04:58:47 · answer #2 · answered by physandchemteach 7 · 0⤊ 0⤋
These are two separate questions.
The molar mass of water is 18 g, so 100 g of water contains 100/18 = 5.56 mol. The molar mass of water could be looked up, or could be calculated based on the formula H2O and the fact that the molar mass of H is 1 g and the molar mass of O is 16. A more precise value of the molar mass is 18.01524 g, if you want to re-calculate it.
A mole of particles is 6.02 x 10^23, so 10^24 molecules would be (10^24)/(6.02 x 10^23) = 1.66 mol.
2007-03-26 04:58:45 · answer #3 · answered by DavidK93 7 · 0⤊ 1⤋
1 mole of water has a molecular mass of 18
100/18 =5.55moles
2007-03-26 05:54:54 · answer #4 · answered by maussy 7 · 0⤊ 0⤋
Safely & Permanently Remove Moles, Warts and Skin Blemishes
2016-05-16 04:39:42 · answer #5 · answered by Anonymous · 0⤊ 0⤋
mass *(1mol/molar mass) = moles 100g *(a million.00 mol/18 g) = 5.6 moles word that the grams cancel molar mass is mass of one mole, hence the 1mol/MW molecules *(a million.00 mol/6.02x10^23molecules) = moles a million.00x10^24 molecules *(a million.00mol / 6.02^10^23 molecules) = a million.sixty seven mol lower back "molecules" as instruments cancel form of molecules in one mol is 6.02^10^23, consequently the fraction a million.00mol/6.02^10^23 as those 2 numbers characterize one and an identical volume (purely like length of pencil in centimeters is the *same volume of length* as whilst an identical pencil is measured in inches!)
2016-12-08 11:36:24 · answer #6 · answered by lemanski 4 · 0⤊ 0⤋
1.00 x 10 raised to the powerof 24,.. gram/moles
2007-03-26 05:00:58 · answer #7 · answered by Norrie 7 · 0⤊ 0⤋
5.54 moles of water in 100 grams
each mole of waer has 18.02 grams
2007-03-26 04:59:30 · answer #8 · answered by PV=NRT 2 · 0⤊ 0⤋
18g conatain =1mole
100g will contain =1x100/18= 5.56moles
2007-03-27 21:37:57 · answer #9 · answered by Anonymous · 0⤊ 0⤋