Biology; Chemistry; Physics: Post your doubts here!

[Suhaib]

For the second last question, the heat capacity one,
the mass was o.50 kg right ?

What formula U used to get 0.5 ?

 

[Ram97]

What formula U used to get 0.5 ?

Specific Heat Capacity one

 

[DaniyalK]

What formula U used to get 0.5 ?

It was 72000/(34*4200). M = E/(Temp. change * specific heat capacity)

 

[***amd***]

then how much?

yaar .-. i m a C grader at school. (just in English)

You, my friend, have proved that you are a rascal
You are reluctant to guide others so that the percentile can fall. You tell people that you have solved only 2 papers, but have been studying the whole day; others get relaxed. The cloth behind these notorious and evil acts has been unveiled and your scheme will be tottered. You have made yourself despicable

if you are not good at a particular subject, will u still guide others about that even when you urself are not sure that u r right or not for whatever you say?
well, believe it or not. I actually did 2 P2s and 2 P1s yesterday. I dont think i need to prove it

 

[Lilly2318]

yaar .-. i m a C grader at school. (just in English)

if you are not good at a particular subject, will u still guide others about that even when you urself are not sure that u r right or not for whatever you say?
well, believe it or not. I actually did 2 P2s and 2 P1s yesterday. I dont think i need to prove it

im a C grader for Maths. if ur good at it help me after 2 days

 

[sameersuleman]

im a C grader for Maths. if ur good at it help me after 2 days

A* in maths ... need help.... btw im not showing off

 

[Lilly2318]

A* in maths ... need help.... btw im not showing off

ok

 

[***amd***]

im a C grader for Maths. if ur good at it help me after 2 days

yeah, sure

 

[Muhammad_Hamza]

what

are anss. is metal zinc?

Yes Zn(OH)2

 

[Lilly2318]

Yes Zn(OH)2

and the brown gas bromine?

 

[Muhammad_Hamza]

and the brown gas bromine?

Mark Scheme

 

[DaniyalK]

and the brown gas bromine?

The brown gas will be nitrogen dioxide.

 

[Muhammad_Hamza]

and the brown gas bromine?

Zinc metal kaise answer nikala ap ne
Identification of Cations and Anions ka table se?

 

[Dark Destination]

F was 3.33 today, in that Hydraulic press question.

 

[Ram97]

F was 3.33 today, in that Hydraulic press question.

Haan

 

[Dark Destination]

Haan

And what did you write for advantage and disadvantage of expansion?
For advantage i just wrote ''Thermometer''.. just one word.

For Disadvantage, ''Railway lines''... idk if i'll get the marks. :/

 

[Lilly2318]

The brown gas will be nitrogen dioxide.

can u tell the colour of some gases. i only knw of oxy, co2, ammonia, chlorine, so2

 

[Lilly2318]

And what did you write for advantage and disadvantage of expansion?
For advantage i just wrote ''Thermometer''.. just one word.

For Disadvantage, ''Railway lines''... idk if i'll get the marks. :/

advantage railway lines to fil gaps
disadvantage : tyres
what have u been studying today?
i dont knw how i'll manage chem in one day

 

[Ram97]

can u tell the colour of some gases. i only knw of oxy, co2, ammonia, chlorine, so2

Bromine: Reddish Brown
Flourine: Yellow

 

[Ram97]

advantage railway lines to fil gaps
disadvantage : tyres
what have u been studying today?
i dont knw how i'll manage chem in one day

Railway tracks was disadvantage