Question

determine the percent composition of potassium nitrate kno3
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Answer 1

Method

Molecular  weight of KNO3 =At wt  of K+At weight  of N+3*(at wt  of O)

=39+14+(3*16)

=39+14+48

=53+48

=101gm

101 gm of KNO3  contains 39 gm of K

100gm of KNO3 contains 39/101*100=38.6% of K

101 of KNO3  contains 14gm of N

100 of KNO3 contains 14/101*100=13.86% of N

101 of KNO3  contains48 gm of O

101 of KNO3  contains48 /101*100=41.52% of O

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Answer 2

Answer:

Method

Molecular weight of KNO3 =At wt of K+At weight of N+3* (at wt of O)

=39+14+(3*16)

=39+14+48

=53+48

=101gm

101 gm of KNO3 contains 39 gm of K

100gm of KNO3 contains

39/101*100=38.6% of K

101 of KNO3 contains 14gm of N

100 of KNO3 contains 14/101*100=13.86% of N

101 of KNO3 contains48 gm of O

101 of KNO3 contains48 /101*100=41.52% of O

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