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3 years ago

What is the percent composition of potassium in KNO3

Chemistry

2 answers:

ladessa [460]3 years ago

8 0

Answer:

38.6%

Explanation:

Molar mass of KNO3 is

=39+14+(16*3)

=53+48

=101 g/mol

Now

Percentage composition of potassium in KNO3 is=(atomic mass of K*no. of atoms)/molar mass of KNO3 *100%

%age composition of K= (39*1)/101 *100%

=0.386*100%

=38.6%

crimeas [40]3 years ago

7 0

Element Symbol Mass Percent

Nitrogen N 13.854%

Oxygen O 47.474%

Potassium K 38.672%

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Given :

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To Find :

How many grams of NaCl is required .

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Let , NaCl required is x gram .

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kotykmax [81]

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