Consider the reaction between hcl and o2: 4hcl grams + o2 - 2 h2o liquid + 2 cl2 grams when 63.1 grams of hcl react with 17.2 g of o2, 49.3 grams of cl2 are collected. what is the limiting reactant?

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.

they are both synthetic elements

explanation:

d