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A sample of pure Ca metal weighing 1.35 ...

A sample of pure Ca metal weighing 1.35 grams was quantitatively converted to 1.88 grams of pure Cao. What is the atomic weight of Ca? (O = 16)

Text Solution

Verified by Experts

From the formula of Cao,
we know, moles of Ca = moles of O
`("weight of Ca")/("atomic wt. of Ca")= ("weight of O")/(" atomic wt. of O")`
`(1.35)/(at. wt. of Ca.) = ( 1.88 - 1.35)/(16)`
Atomic weight of Ca = 40-75.
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