ev200407 ev200407

21-05-2021
Chemistry

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How many moles are in 68 grams of potassium sulfide (K2S)?

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tutorAnne tutorAnne

26-05-2021

Answer:No of moles of potassium sulfide (K2S)=0.61671moles

Explanation:

No of moles is given as Mass/ molar mass

Here Mass of potassium sulfide (K2S) =68 grams

Molar mass of potassium sulfide (K2S) = 39.0983 x 2 + 32.065 =110.2616 g/mol

No of moles =68 grams /110.2616 g/mol

=0.61671moles

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