Q18 2011 (1 Viewer)

michaelhannigan

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No. moles HCl= 24.4/1000 x 0.1= no.moles NaX in 20mL sample ( includes 0.2 g NaX)
Therefore, Molar mass NaX= mass/no.moles= 0.2 x 1000/ 24.4 x 0.01 = 81.97... (A)
 

Mr_Kap

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I got C. Can you explain what you did and why please?
 

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