Answer: The vapor pressure of the solution is 186.4 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 : 21.5 g of lactose is present in 200.0 g of water.
moles of solute (lactose) = 
moles of solvent (water) = 
Total moles = moles of solute (lactose) + moles of solvent (water) = 0.0628+ 11.1 = 11.1628
= mole fraction of solute =
Thus the vapor pressure of the solution is 186.4 torr
Answer:
It will float/be partially submerged
Explanation:
Answer: A. inconsistent data
Indeed, using inconsistent data in a research or more to support an argument will only jeopardize its validity. A scientific argument supported by inconsistent data will be considered invalid and unreliable. That's why there are several scientific ways on data gathering.
Answer:
there should be a picture to go with this question. it will give you the mass which is needed to calculate the density.
It could be electrical and sound energy, not sure if you have a “both C and D” option.
