How many molecules are there in 39 grams of water?

Answer 1

Steam is just water. Water weighs the same per molecule regardless whether it is ice, water, or steam. That said, the molecular weight of water is right at 18 g/mole. So it seems that 9.0 grams of steam is about half a mole of water. Therefore we just divide avagrado's number by 2 and we get:

6.022 x 1023 / 2 = 3.011 x 1023 molecules

Answer 2

number of particles = moles x avogadro's constant therefore:

9moles x (6.02 x 10^23) = 5.418 x 10^24

that number is many trillions of molecules

Answer 3

90 g of water equals 30,11.10e23 molecules.

Answer 4

The answer is 13,048.1023 molecules.

Answer 5

12.01