Question 6 (1 point) Calculate the number of formula units in 1.87 mol of NH4Cl
O a
1.88 x 1023 NH4CI
Oь
1.13 x 1024 NH4Cl
Ос
6.75 x 1024 NHACI
od
1.12 x 1024 NH4CI

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

Cis the

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