Choose the type of mixture that best describes the following substance.

tossed salad:

a. homogenous mixture
b. heterogeneous mixture

b. heterogeneous mixture

Explanation:-

Heterogeneous mixtures  : It is a mixture that has non-uniform distribution throughout the solution and thus there is a distinct boundary between the dispersed phase and dispersion medium. Example: sand in water

Homogeneous mixtures  : It is a mixture that has uniformly throughout the solution and thus there is no distinct boundary between the dispersed phase and dispersion medium. Example: Salt in water

Thus Tossed salad in which the components are uniformly distributed and can be seen distinctly is a heterogeneous mixture.

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.