A Compound with Unknown Structure has a molecular formula C5H8O2. It is sparingly
Soluble in water and unreactive with NaHCO3,
resists oxidation; and forms a yellow Precipitate
in the Iodoform test, Draw a possible structure
for this 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.

answer; talc and gypsum;