1.

If 1.5 moles of oxygen combine with Al to form Al_(2)O_(3), the mass of Al in g (Atomic mass of Al = 27 ) used in the reaction is

Answer»

2.7
54
40.5
81

Solution :`4Al+3O_(2)rarr 2Al_(2)O_(3)`
3 moles of `O_(2)` combine with Al = 4 moles `=4xx27g=108g`
`THEREFORE"1.5 moles of "O_(2)" will combine with Al = 54 G."`


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