- Messages
- 343
- Reaction score
- 220
- Points
- 53
ThankyouCoursebook is best.
We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
ThankyouCoursebook is best.
anytime brox..Thankyou
are you seroius?hf means high frequency
yeah UV light has the exact frequency needed we can use higher like gamma rays....are you seroius?
haha thanks.yeah X rays have the exact frequency needed we can use higher like gamma rays....
what make you think i am kidding
no its nothaha thanks.
does writing uv light as one of hf is wrong?
You shall quote the data according to the booklet given to you. You cannot possible remember all the bond energy values. Besides, most schools provide you with the latest data booklet so you don't have anything to worry about.I have a question > When we want to use Bond energy of Cl2 >> as its quoted in the
Data booklet it should be 242 .. but for Many time i have seen that they are using 244 as the answer !
Why? which data should we quote if the question came to us ?
one of the questions is o'n 2009 va' 41
TheZodiac
6Astarstudent
When step 1 is the slowest, we only see 1 mole of H2O2, 1 mole of I- and 0 moles of H+. Hence the order is 1,1,0.
Answered above.i want help too in the same question.
Thank you!You shall quote the data according to the booklet given to you. You cannot possible remember all the bond energy values. Besides, most schools provide you with the latest data booklet so you don't have anything to worry about.
When step 1 is the slowest, we only see 1 mole of H2O2, 1 mole of I- and 0 moles of H+. Hence the order is 1,1,0.
When step 2 is the slowest, it means that step one has already taken place and looking at both the equations we can see that we have 1 mole of H2O2 and 1 mole of I- from the 1st equation and 1 mole of H+ as well, from the second equation. Hence the order is 1,1,1.
When step 3 is the slowest, both the previous steps have taken place and have to be taken into account. We see 2 moles of H+, 2 moles of I- and 1 mole of H2O2 from the equations. Hence, the order would be 1,2,2.
Answered above.
Hey guys...how can get above 30/40 in chemistry P1 .....and what should I do in order to get A* overall in Alevel chemistry...
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now