27 g of Al will react completely with…… ...

`27 g` of `Al` will react completely with…… `g` of `O_(2)`

Text Solution

Verified by Experts

`4Al + 3O_(2) rarr 2Al_(2)O_(3)`
Atomic weight of Al = 27
Thus `4 xx 27` of Al reacts with oxygen = `3 xx 32`g
27 g of Al reacts with oxygen = `3 xx 32 / 4 xx 27 xx 27 = 24 g`

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