00:01
Given the volume of water v equals 3 liters convert this with this volume in letters to milliliters 3 liters into 1000 milliliters divided 1 liters you'll get 3 ,000 milliliters now the mass of water m is equals to volume into density of water we know that the density of water is equals to 1 gram per milliliter.
00:38
By substituting these two values, we get 3 ,000 m millimeter into 1 gram per millimeter is equals to 3 ,000 grams.
00:55
The number of moles in 3 ,000 gram of h2o, which is the water molecule, is given as n equals small.
01:04
M divided by capital m.
01:06
This m is the mass of the water and the capital m is the molar mass of water.
01:12
We have the molar mass of water as 18 .101528 gram per mole.
01:20
Substituting these values we get 3 ,000 gram divided by 18 .01528 gram per mole.
01:35
We get the answer as 166.
01:40
5253 05 moles the number of we know that 1 mole has 1 mole has 6 .023 into 10 per 23 molecules which is the avogadro number so the number of molecules in calculated n moles of h2o is n equals 166 .525355 moles into 6 .023 into 10 power 23 molecules...