Answer:
1.E25 it is the answer the answer to mass of 1×10^25 molecules of water
Step-by-step explanation:
this is just EXPLINATION find your answer using this
first divide the number of molecules by Avogadro's number 6.022*10^25
you will
l get no. of Moles of water
multiply the no. of Moles with mass of 1 Mole of water 18g per mole
if get answer you comment
you should try on your own you will understand better