Answer:
Pain
Explanation:
the pain depends on u banging your head
Answer: A. The particles move faster
Explanation:
Increasing the temperature increases the kinetic energy of the particles, causing them to move faster.
Answer : The volume of NaOH stock solution used should be, 250 ml
Solution :
According to the neutralization law,
where,
= molarity of NaOH solution = 0.50 M
= volume of NaOH solution = 3.0 L
= molarity of NaOH stock solution = 6.0 M
= volume of NaOH stock solution = ?
Now put all the given values in the above law, we get the volume of NaOH stock solution.
(1 L = 1000 ml)
Therefore, the volume of NaOH stock solution used should be, 250 ml
Answer: The vapor pressure of methanol solution at 298K is 107.12 torr
Explanation:
As the relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.
The formula for relative lowering of vapor pressure will be,
where,
= relative lowering in vapor pressure
i = Van'T Hoff factor = 1 (for non electrolytes)
= mole fraction of solute =
Given : 38.5 g of urea is present in 142 g of methanol
moles of solute (urea) =
moles of solvent (methanol) =
Total moles = moles of solute + moles of solvent = 0.64 + 4.4 = 5.04
= mole fraction of solute =
Thus the vapor pressure of methanol solution at 298K is 107.12 torr
It rises. it can steam before an after boiling point.