Question

Calculate the % of oxygen in Al2(SO4)
(Atomic mass Al - 27,0 - 16, S - 32)​

Answer 1

Answer:

There is 42.66% oxygen in Al2(SO4)3.

Explanation:

Wt. Of oxygen in the compound=4*16 =64amu.,

Total Wt. Of the compound=27*2+32+16*4=150 amu.,

Thus, percent of oxygen=Wt of oxygen/total Wt. Of compound *100 ,

=64/150 *100=42.66%.

Hope it helps.

Answer 2

Hyy dear

Answer:

There is 61.538% oxygen in Al2(SO4)3.

Explanation:

Wt. Of oxygen in the compound=12*16 = 192 amu.

Total Wt. Of the compound=2*12+3*32+12*16=312 amu.

Thus, percent of oxygen=Wt of oxygen/total Wt. Of compound *100

=192/312 * 100=61.538%. Ans.

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