An aqueous solution of glucose, C_2 H_12 O_6 has a mole fraction of 0.4 for glucose. What is the molality of this solution?
A. 31m B. 46m
C. 37m D. 54m
If 20 g of ethanol (formula mass 46) and 30 g of water (formula mass 18) are mixed together, the mole fraction of ethanol in this mixture is.
A. 0.261
B. 0.207
C. 0.739
D. 0.793
Pa help po sagutan ito
If 20 g of ethanol (formula mass 46) and 30 g of water (formula mass 18) are mixed together, the mole fraction of ethanol in this mixture is.
A. 0.261
B. 0.207
C. 0.739
D. 0.793