159.3 g
mol= mass (g)/ molecular weight (g/mol)
How is the sun the major source of energy in the water cycle?
1 answer:
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Answer:
A, C and D are correct.
Explanation:
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In this case, since the relationship between the vapor pressure of a solution is directly proportional to the mole fraction of the solvent and the vapor pressure of the pure solvent as stated by the Raoult's law:
Since the solute is not volatile, the mole fraction of the solute is not taken into account for vapor pressure of the solution, therefore A is correct whereas B is incorrect.
Moreover, since the higher the vapor pressure, the weaker the intermolecular forces due to the fact that less more molecules are like to change from liquid to vapor and therefore more energy is required for such change, we can evidence that both C and D are correct.
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Answer:
The number of sulfur atoms in 1 g of sulfur is:- atoms
Explanation:
Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by .
Avogadro constant:-
Given atomic mass of sulfur = 32 u
Which means that:-
32 g of sulfur contains of atoms
Also,
1 g of sulfur contains of atoms
<u>So, The number of sulfur atoms in 1 g of sulfur is:- atoms</u>