3. How many oxygen atoms are there in 1090 g of calcium acetate? (Ans: 1.66 x 1025 atoms) са Сгн зог

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how would i do number 3? this is my non graded practice work

3.
1090 911302)2
са
4.
How many oxygen atoms are there in 1090 g of calcium acetate? (Ans: 1.66 x 1025 atoms)
Ca C ₂ H ₂0₂
nug fio
Abestive? mwisuga bolni
dr Brigol silmosd of bas
What mass of iron could be obtained from 40.0 grams of iron (III) oxide? (Ans: 28.0 g)
Fe
0
stamina
ور
fe-> 55.85
0-716
71.85
5. The analysis of a substance showed that it contained 30.46% nitrogen and 69.54% oxygen by mass. The
molar mass of the actual substance was found to be 92.02 g/mol. Determine both the empirical and
molecular formula of the substance. (Ans to Molecular: N₂O4)
Transcribed Image Text:3. 1090 911302)2 са 4. How many oxygen atoms are there in 1090 g of calcium acetate? (Ans: 1.66 x 1025 atoms) Ca C ₂ H ₂0₂ nug fio Abestive? mwisuga bolni dr Brigol silmosd of bas What mass of iron could be obtained from 40.0 grams of iron (III) oxide? (Ans: 28.0 g) Fe 0 stamina ور fe-> 55.85 0-716 71.85 5. The analysis of a substance showed that it contained 30.46% nitrogen and 69.54% oxygen by mass. The molar mass of the actual substance was found to be 92.02 g/mol. Determine both the empirical and molecular formula of the substance. (Ans to Molecular: N₂O4)
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