Consider the reaction below. hf + h2o mc011-1.jpg h3omc011-2.jpg + fmc011-3.jpg which is an acid-conjugate base pair? hf and h3o+ hf and fmc011-4.jpg h2o and hf h2o and fmc011-5.jpg

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.

the right answer is c i just did the question.