S. Properties can be anything from composition to color to ductility. Without knowing an object's properties, it is impossible to characterize it. For example, looking at some common properties of metals helps to differentiate them from non-metals or metalloids.
There are 6.022*10^23 molecules in 1 mole of carbon
So how many will moles will be 7.87*20^7?
Let the required number of moles be ‘x’.
1 mole ———6.022*10^23
x moles———7.87*10^7
(Cross multiplication)
x=7.87*10^7/6.022*10^23
Therefore x=1.3*10^-16
Number 1 do a data table on paper and do as it was said, then go into Microsoft Excel and put your chart in. For 2 make a line graph(as stated) and do what it tells you.For 3 do as said with the line graph or whatever it should look somewhat like a math chart(the coordinate plane) and do as said. For number 4 help him/her study the charts and analyze the difference between the two. And for number 5 make him/her choose one element and research and write down the questions.
No. Think about it this way: it’s a physical, leftover substance, you can never have a negative amount of anything.
If you’re speaking in terms of charge, however, then yes, it’s very likely.
Answer:
The correct answer is 40.861 torr.
Explanation:
Based on the given information, the weight of the solute (sucrose) given is 44.6 grams, the weight of the solvent, that is, water given is 62.3 grams, and 42.2 torr is the vapor pressure of pure water.
Now the molecular weight of sucrose is 342 grams per mole, and the molecular weight of water is 18 grams per mole.
The mole fraction of solute will be,
Mole fraction of solute = Weight of solute/Molecular weight of the solute/Weight of the solvent/molecular weight of the solvent + Weight of the solute/Molecular weight of the solute
= 44.6 grams/342 grams per mole/62.3 grams/18 grams per mole + 44.6 grams/342 grams per mole
= 0.1304/3.461 + 0.1304
= 0.0363
Now using relative lowering of vapor pressure,
Vapor pressure of pure water-Vapor pressure of solution/Vapor pressure of pure water = Mole fraction of solute
42.4 torr - PS/42.4 torr = 0.0363
Ps = 42.4 -1.5395
Ps = 40.861 torr
Hence, the vapor pressure of the solution is 40.861.
