How many molecules of water are there in 36 gram of water?
Answers
Answered by
256
H2O is the formula for Water.
Molecular mass = 2(H)+1(O)
= 2*1 + 1*16 = 2 + 16 = 18 gm
1 gm molecule of water = 18 g of water.
18gm of water contain 6.023 x 10^23 molecules of water
For 36 gm of water contain
36x 6.023 x 10^23/18
= 2 x 6.023 x 10^23 molecules of water
2x6.023x10^23 molecules of water
^-^
srushti308:
no sis its 22
wanna know the right answer?
umm..
yeah !! and that's the correct answer sis
but its not 46 its 44
umm..
Answered by
86
It is equal to Avogadro's number (NA), namely 6.022 x1023. If we have one mole of water, then we know that it will have a mass of 2 grams (for 2 moles of H atoms) + 16 grams (for one mole O atom) = 18 grams. Since we only have 0.001 grams, that means that we have NA * (0.001/18) = 3.35*1019 molecules of water!
mark as brainlist
Not satisfied.
you didn't read the question properly and this might be the reason you answer it wrong
Similar questions