On the weak base/strong acid titration curve below, label the following points. a) The point where the pH corresponds to a solution of the weak base (B) in water. b) The point where the pH corresponds to a solution of the conjugate acid (BH +) in water. c) The point where pH=pKa (for BH+).

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.

wher is the rest of the question

answersilicon (si); oxygen (o);