Calculate the volme of oxygen, measured at room temp and pressure, which can be obtained by this reaction from 1.7g oh hydrogen peroxide.
Reaction: 2H202 --> 2H2O + O2 (its balanced)
My answer is 0.6 cm3. My book says the answer is 600cm3. Why? Or is the book wrong?Its been wrong before so...
2006-10-13 04:08:43 · 2 answers · asked by Chocolate Strawberries. 4 in Science & Mathematics ➔ Chemistry
Can anyone please show their workings? 10 points!
2006-10-13 04:18:40 · update #1
I think your question should say volume not mass.
2H202 gives 2H20 + O2
68 g H2O2 ............1 mole O2
!.7/68 g H2O2 = gives 1.7/68 moles
= 1.7/68 x 22.4 x 10^3 cm^3 at STP
Correcting for room temp.,(20C = 273+20 =293K), we get
1.7/ 68 x 22.4 x 10^3 x 293/273 = 601 cm^3
Note.
Your book is correct.
I think your answer really is 0.6 litres, which is 600 cm^3
2006-10-13 05:51:17 · answer #1 · answered by Anonymous · 0⤊ 0⤋
if it is m3 600 is right..
2006-10-13 11:16:40 · answer #2 · answered by marav 2 · 0⤊ 0⤋