chemistry problems?

2020-09-08 1:20 pm
Suppose a 15.9722 g sample of a 
N
a
C
l
 and 
K
C
l
 mixture contains 3.5831 g of 
N
a
C
l
.

What is the percent of 
K
C
l
 in the mixture?

回答 (2)

2020-09-08 1:31 pm
Percent of KCl in the mixture
= [(15.9722 - 3.5831)/15.9722] × 100%
= 77.567%

====
OR:
Percent of NaCl in the mixture
= (3.5831/15.9722) × 100%
= 22.433%

Percent of KCl in the mixture
= (100 - 22.433)%
= 77.567%
2020-09-08 1:22 pm
KCl and NaCl are basically the same thing. It's just a lump of salt.


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