Qualification > Sciences
CHEM AND BIO HELP AND TIPS HERE
holtadit:
Mumtaaz ! Means excellent.
Au Revoir ! (Can you guess what this means :P)
nid404:
thts french dodo ! :P
You know more arabic than you know hindi....laanat hain ! :P
Cool guy:
hey nid??? explain why antibiotics kill bacteria but not
viruses and describe the medicinal use of antibiotics for the
treatment of bacterial infection
nid404:
--- Quote from: Cool guy on April 29, 2010, 04:41:40 pm ---hey nid??? explain why antibiotics kill bacteria but not
viruses and describe the medicinal use of antibiotics for the
treatment of bacterial infection
--- End quote ---
What antibiotics do is they prevent formation of bacterial cell wall, thus leading to their death
Antibiotics target only bacterial function and structure and so have no effect on virus'
holtadit:
20 cm^3 of 1 mol/dm^3 of NaOH was titrated with a certain amount of H2SO4 of 1 mol/dm^3
The H2SO4 was added in portions. Each consecutive portion caused the temperature to rise (initial starting temp. was 25 degress):
Addition of 5 cm3 Addition of 15 cm3 Addition of 25 cm3 35 cm3
1st portion 2nd 3rd 4th
27 degrees 31 32 30
The experiment is repeated with 20 cm^3 of 0.5 mol/dm^3 of NaOH and H2SO4 of 0.5 mol/dm^3
Suggest what volume of H2SO4 would produce the highest temp. ?
---------------------------------------------------------------------------------------------------------------------------------------
No MS available, but I think its 50 cm3
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version