Ohhh im soo dumb. I don't know why i do a-levels. Okay but how would i calculate the rate of hydrolysis? I assumed it was g s-1??

i swear down new spec makes me suicidal

5 minutes is 300 seconds. Divide each mass by 300 to get rate in g s-1.

Reply 11

chemistry002

Original post by SGHD26716

Rate of hydrolysis will have units g/s so that's how you get rate. The thing is 5 minutes long.

would the first one be

48/300

because 5x60= 300 secs

Reply 12

chemistry002

Original post by SGHD26716

Rate of hydrolysis against temperature. It has to be rate due to biology reasons I can't remember.

my g is going to get an A* in biology and become a doctor.

Thank you xx

Reply 13

S.G.

Original post by chemistry002

would the first one be

48/300

because 5x60= 300 secs

0.48 g of protein were hydrolysed in 300 seconds.

So, rate of hydrolysis 0.48/300 = 0.0016 g s-1

Reply 14

Kvothe the Arcane

Original post by chemistry002

would the first one be

48/300

because 5x60= 300 secs

Yes. Although the unit below per is left blank so I'm not sure if it's necessary to have it per second and not per minute, for example. Guess you'll find out when you see the markscheme.

(edited 8 years ago)

Reply 15

S.G.

Original post by chemistry002

my g is going to get an A* in biology and become a doctor.

Thank you xx

Ha. Thanks. I have applied for medicine but biology was so hard.

Reply 16

chemistry002

Original post by SGHD26716

Ha. Thanks. I have applied for medicine but biology was so hard.

i want to apply for med next year. Everyones saying biology was hard so don't worry about it too much. Did you get and if so where?

Reply 17

S.G.

Original post by chemistry002

i want to apply for med next year. Everyones saying biology was hard so don't worry about it too much. Did you get and if so where?

One offer. Liverpool. I need 3 A but don't have a clue how I did with biology and hoping I did well enough in chemistry. Just depends on grade boundaries now.

Reply 18

chemistry002

Original post by SGHD26716

One offer. Liverpool. I need 3 A but don't have a clue how I did with biology and hoping I did well enough in chemistry. Just depends on grade boundaries now.