Answer:
- Molality:
- Mole fraction:
Explanation:
Hello,
- Molality: in this case, the solution is formed by 3.7% by mass of sodium chloride and water, thereby, we assume we have 100 g of solution in order to find the mass of sodium chloride as shown below:
Hence, the moles of sodium chloride and kilograms of water are:
With which the molality results:
- Mole fraction: in this case, since we have previously computed the moles of sodium chloride, we now compute the moles of water as:
Thus, the mole fraction of sodium chloride is:
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Answer:
C₃H₈ has a higher boiling point than C₂H₆
Explanation:
The boiling point is the temperature at which the intermolecular bonds holding molecules in liquid form are overcome and change the state into a gas. C₃H₈ experiences stronger intermolecular bonds then C₂H₆ because it has more carbons. While the strength of each bond is the same between the two molecules, C₃H₈ has more opportunities to create these bonds due to the higher carbon count. The more bountiful the intermolecular bonds, the more energy is needed to overcome them all. Thus, C₃H₈ has a higher boiling point.
467.5 centimeters. are you sure that's high school chemistry though, lad?
