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Here I will assume that you meant 2.62 X 1066.
1 mole of water weights 18.01 grams
1 mole = 6.023X1023 particles
2.62 X 1066 particles = x moles
6.023X1023 particles = 1 moles
x=4.35 X 1042 moles
then
1 mole = 18.01 grams
4.35 X 1042 moles = y grams
y= 7.83 X 1043 grams
I have a feeling you did a mistake with the number of atoms because this is a very large amount of water but you get the idea on how to solve the problem.
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∙ 13y ago
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