Post by: Sue T on June 01, 2010, 07:22:07 pm
6) The density of ice is 1.00 g cm–3.
What is the volume of steam produced when 1.00 cm3 of ice is heated to 323 °C (596 K) at a
pressure of one atmosphere (101 kPa)?
[1 mol of a gas occupies 24.0 dm3 at 25 °C (298 K) and one atmosphere.]
A 0.267 dm3
B 1.33 dm3
C 2.67 dm3
D 48.0 dm3
Post by: nid404 on June 02, 2010, 10:36:49 am
1atm=101kPa
1 moles of water=18g
1g=1/18moles
T= 596K
R=8.31
101000XV=1/18 X 8.31 X 596
V=275.153333/ 101000
V=0.00272429043 m3
1m3=1000dm3
0.00272429043 m3= 0.00272429043 X 1000= 2.7 dm3 approx
Post by: sweetie on June 02, 2010, 12:27:16 pm
cud u xplain QUE.26 of may08 .........
Post by: nid404 on June 02, 2010, 12:31:46 pm
hey,
cud u xplain QUE.26 of may08 .........
If the count of Oxygen increases by 2. Then both OH groups have been oxidised further to COOH. If the OH groups have to be oxidised they have to be primary alcohols. Hence they must be attached to carbon 1 and 4. C
Hope this is clear.
Post by: sweetie on June 02, 2010, 12:54:07 pm
If the count of Oxygen increases by 2. Then both OH groups have been oxidised further to COOH. If the OH groups have to be oxidised they have to be primary alcohols. Hence they must be attached to carbon 1 and 4. Cyup :)
Hope this is clear.
Thank You :-*
Post by: sweetie on June 02, 2010, 02:17:54 pm
i got the vol. of gas remaining as 50, but i cudnt get the vol. after adding NaOH in Q2 ..
Post by: nid404 on June 02, 2010, 05:31:15 pm
cud u also plz xplain Q39,21,2 of nov08
i got the vol. of gas remaining as 50, but i cudnt get the vol. after adding NaOH in Q2 ..
2)https://studentforums.biz/index.php/topic,5334.msg166290.html#msg166290
21) check the attachment.
39) terminating step will involve CH3 radicals reacting to give C2H6. There are 3 carbons in only 1 and 2. So B
Post by: sweetie on June 02, 2010, 05:45:53 pm
2)https://studentforums.biz/index.php/topic,5334.msg166290.html#msg166290
21) check the attachment.
39) terminating step will involve CH3 radicals reacting to give C2H6. There are 3 carbons in only 1 and 2. So B
cud u xplain 39 in more detail wen u get tym :)
Thank You :-*
Post by: nid404 on June 02, 2010, 05:52:23 pm
so the end product will be C3H7 radicals reacting with each other to produce C6H14
count the number of Carbon atoms in 1,2 and 3
Only 1 and 2 have 6 carbons. So it's B
Post by: sweetie on June 02, 2010, 06:12:24 pm
sorry it's the terminating step of propane
so the end product will be C3H7 radicals reacting with each other to produce C6H14
count the number of Carbon atoms in 1,2 and 3
Only 1 and 2 have 6 carbons. So it's B
am really sorry, but even 3 has 6carbon atoms..
Post by: nid404 on June 02, 2010, 06:13:24 pm
am really sorry, but even 3 has 6carbon atoms..
oops...I'll figure then..just gimme some time ;)
Post by: sweetie on June 02, 2010, 10:12:29 pm
Post by: nid404 on June 03, 2010, 05:51:43 am
Post by: ruby92 on June 04, 2010, 10:21:01 pm
10 28
??? ???