Percent composition of k2Cr2O7?



Sagot :

Explanation:

Symbol Mass Percent × No.of atom Cr 35.35% × 2

O 38.07% × 7

K 26.58% × 2

= percent composition

= 70.07%

= 266.49%

= 53.16

total= 390.35%

Hope it help

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