kluckey3426
17.07.2019 •
Chemistry
What is the mole fraction of urea in a solution that contains 2.1 mol of urea and 4.4 mol of water?
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Ответ:
calculation
mole fraction = moles of urea/ total mole
moles of urea = 2.1 mole
calculate the total mole
= 2.1 mole + 4.4 mole = 6.5
Mole fraction is therefore = 2.1/.6.5 = 0.32
Ответ:
decrease, decrease, increase