Solubility of salts in water is temperature dependent. consider the solubility curve of the salts seen here. which salt's solubility changed the least from 0 - 100oc; which salt's solubility changed the greatest amount from 0 - 100oc?

sodium chloride changed the least; potassium nitrate changed the most.

Explanation:

In the picture attached, the missing solubility curve of the salts is shown.

Sodium chloride changed the least because the solubility at 100 °C is very similar to the solubility at 0 °C.

Potassium nitrate changed the most because the difference between the solubility at 100 °C and the solubility at 0 °C (which is approximately equal to 243 - 13 = 230 g of potassium nitrate per 100 cm^3 of water) is the greatest of all the differences of solubilities for any compound.

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.