Use the following balanced chemical equation to complete a & b. 2AlPO4 + 3 SrBr2 → Sr3(PO4)2 + 2 AlBr3

A) Determine the theoretical mass of AlBr3 made if 62.3 g of SrBr2 reacts completely.

B) What is the percent yield if 31.8 g of aluminum bromide are actually produced?

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.

d : a person who learns about the world by observing it. no that is not a smiley face

explanation: