^H=mC^t have u seen this formula b4 ------------> (1 Viewer)

[lillaila]

n x Q = (mC^t)/1000
For Kj

which do u use.............for me 2nd is easier

 

[jm1234567890]

you really should tell us what each symbol stands for.....

 

[hipsta_jess]

i use q=mSH(delta)T

mass*specific heat*change in temp

 

[ND]

Yeh i use q=mC^t, where m is mass, C is specific heat capacity, and ^t is change in temp.

 

[ballerinabarbie]

Originally posted by ND
Yeh i use q=mC^t, where m is mass, C is specific heat capacity, and ^t is change in temp.

same here

 

[Azn fairies]

same.... there's no other formuale are there??

 

[Dangar]

i use specific heat = (energy supplied in J) / ((mass in g) times (change in temp))

it's basically the same formula rearranged, but i find it easier to remember in words.

 

[ND]

Originally posted by Azn fairies
same.... there's no other formuale are there??

I think she was just asking whether we do it in J or kJ, doesn't really make a difference, since we usually have to convert to kJ/mol anyway.

 

[jm1234567890]

formulas are given on back of periods table

 

[iambored]

they give ^H = MC^T (or does it have a minus as well, can't remember)


why do they give 3 little formulas for chem, and none for maths?