Biology; Chemistry; Physics: Post your doubts here!

[Spidey21]

what are the waste products of Chymosin Formation by Fermentation using Yeast....
ref June 2010 paper 2 question 1

 

[amna shah]

What is the purpose and difference btw SLIP RINGS AND SPLIT RING COMMUTATOR ??

 

[SalmanPakRocks]

What is the purpose and difference btw SLIP RINGS AND SPLIT RING COMMUTATOR ??

Slip rings are used in A.C generator and are attached to carbon brushed so that the induced e.m.f might be transfered to the load.
Whereas split rings are used in D.C motors, the purpose is the reverse the direction of current in order that the coil keepings moving.

 

[ayeshaK]

what are the waste products of Chymosin Formation by Fermentation using Yeast....
ref June 2010 paper 2 question 1

The waste products would be ethanol and carbondioxide
Anaerobic respiration of yeast produces these two waste products !!

 

[Spidey21]

The waste products would be ethanol and carbondioxide
Anaerobic respiration of yeast produces these two waste products !!

how do you know its anaerobic??

 

[ayeshaK]

how do you know its anaerobic??

Because yeast respires anaerobically

 

[SalmanPakRocks]

how do you know its anaerobic??

It's an anaerobic because the reaction occurs without the presence of oxygen, that's the reason the container is air tight.

 

[Spidey21]

It's an anaerobic because the reaction occurs without the presence of oxygen, that's the reason the container is air tight.

Because yeast respires anaerobically

OOOH SHIINY!!

seems LEGit..

 

[Spidey21]

It's an anaerobic because the reaction occurs without the presence of oxygen, that's the reason the container is air tight.

Because yeast respires anaerobically

thanx btw..

 

[SalmanPakRocks]

thanx btw..

np

 

[Spidey21]

np

 

[screamingskull]

View attachment 8521
I m confused in this part. I used the mole ratio solution but the answer in Marking scheme is '10800g'. I don't think that's possible becuase, that would be the mass of Octane and to calculate the mass of Carbon dioxide, shouldn't we use the mole ratio?

The method is ver simple:
Since they have mentioned tha the car is travelling at a constant speed and that for every km 108g of CO2 are produced, you will use the ratio method that is
108g: 1km
x g : 100 km

That's it!!

 

[SalmanPakRocks]

The method is ver simple:
Since they have mentioned tha the car is travelling at a constant speed and that for every km 108g of CO2 are produced, you will use the ratio method that is
108g: 1km
x g : 100 km

That's it!!

I did that, except for the fact that i took 108 as the amout of octane rather CO2. That's one example that one should read the question carefully. :/

 

[Mayedah]

whats the unit for the sample..

The unit is gram

 

[screamingskull]

I did that, except for the fact that i took 108 as the amout of octance rather CO2. That's one example that one should read the question carefully. :/

Hahaha yeah just a little mistake can ruin your life

 

[Spidey21]

The unit is gram

so my previous post about calculating the mass of the sun....it seems very actual...

 

[Mayedah]

so my previous post about calculating the mass of the sun....it seems very actual...

So what am i supposed to do wid this question

 

[Spidey21]

So what am i supposed to do wid this question

Moderation edit: Removed
back to topic!

 

[Spidey21]

Moderation edit: Removed
back to topic!

EVIL MODS!!

 

[Mayedah]

Moderation edit: Removed
back to topic!

Try to solve the question .ill ask my sir tomm too !!
Btw its from year 1997