How many water molecules are present in 300ml of water?

Answer 1

density of water is approx. 1 g/L so it's 300 g of water

water is 18 g/mol so it's 300/18 moles = 16.67 mol

avogadro's number is 6.022e23 particles per mole so total number of particles is 6.022e23*16.67 = 1.004e25

incidentally this is more than the estimated number of stars in the visible universe.

Answer 2

1 mole = 6.022 x 10^23 molecules = 18 grams = 18 ml
x molecules = 300ml
x = (300 x 6.022 x 10^23) / 18
x = 100.367 x 10^23 molecules

Answer 3

Using the Avogadro constant. 6.022 x10^23
This number is the number of molecules in one mole.
1 mole of water is 18 grammes.
However the universal standard is that 1 mole of pure water at 25 degrees C has a mass of 18 grammes and also a volume of 18 cm^3.
So you volume of 300 ml has a mass of 300 grammes.
Divide 300 by 18 = 16.6666.. moles(water)
So the Avogadro Constant is multiplied by 16.66666....
6.22 x 10^23 x 16.666666666... = 1.003666 x 10^25 molecules (water).

Answer 4

Volume and density of water (every thing for a science student) changes with temperature.If we consider density of water as for the simplicity, then 300 ml of water will have 300 gms weight.
Now molecular weight of water is 18 g/mol (for the simplicity of calculations) therefore it is 300/18 moles = 16.6667 mol.
Now as each mole will have molecules equal to Avogadro's number, that is 6.022e23 molecules per mole, that is 18 gms here in this example.
so total number of molecules in 300 ml of water will be:
6.022e23*16.6667 = 1.003669e25
As we have accepted some rounding off of the figures for simplicity, scientific answer will be close to this calculations, but not this exactly.

Answer 5

300 ml of water with density of 1.00 will contain 300/18 Moles of water i.e/ 16.67 M
Number of molecules in one gram mole of water =6.023*10^23;
Number of molecules of water in 16.67 M water = 16.67*(6.023*10^23);
or = 1.00403*10^25 molecules.

Answer 6

16.66 X 6.022 X 10^23

Answer 7

6.023*(10^23)*300/1000

Answer 8

1.0036667 x 10^25
omigosh...

Answer 9

22400 ml water ----------- N molecules 300 ml water-------------- x x= 300*N\22400

Answer 10

many......