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Elements
Given mass
%
Atomic mass
Moles
Mole ratio
Whole no. ratio
P
1.24g
56.4
30.974
1.8
1.3
13
S
0.96
43.6
32.065
1.4
1
10
So the empirical formula is P13S10
atomic weight of P : 31 and S :32
wt of P:1.24g and wt pf : 0.96g
ratio of moles of P:S = (1.24/31) : (0.96/32)
= 4:3
empirical formula is : nP4S3
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