Any base whose conjugate acid has a pK a greater than can remove a proton from a terminal alkyne to form an acetylide ion (in a reaction that favors products).

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots

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.