If the first set of reactants is nh4oh and kal(so4)2 and the second set of reactants is mgso4 and nh4oh, is either reaction considered a synthesis reaction as labeled in the laboratory? why or why not? note: mg(oh)2 and al(oh)3 are both used commercially as antacids.

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.