Which will have a higher boiling point, a 2.5 molal aqueous solution of sodium chloride, or a 2.5 molal aqueous solution of potassium chloride?

Sodium chloride has higher boiling point than Potassium chloride.

Explanation:This is due because potassium is larger than sodium,which means that sodium chloride has higher lattice energy in comparison to potassium chloride.

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.