Biology; Chemistry; Physics: Post your doubts here!

[ayeshaK]

find the total heat gained by 200g metal rod if its temp is raised from 35degreeC to 7odegreeC . c for metal is 3.56multiply 10 power6 J/kg K-1 ?
ANYONE PLZ ! I WANA CHECK MY ANSWER !

2.49x10^7

 

[malay]

LOL!
Nice one! But for most this spectrum is quite easy to memorize when compared to learning the reactivity series!

i have one for reactivity series aswell
though its senseless!
POPULAR SCIENTIST CAN MAKE A ZOO IN LESS HUMID CLIMATE SATISFACTORY
POTASSIUM_SODIUM_CALCIUM_MAGNESIUM_ALUMINIUM_ZINC_IRON_LEAD_HYDROGEN_COPER_SILVER
buh it works!

 

[malay]

How do people imagine such stuff?
but still thanks alot!

ur very welcum sir

 

[Rimsa]

i have one for reactivity series aswell
though its senseless!
POPULAR SCIENTIST CAN MAKE A ZOO IN LESS HUMID CLIMATE SATISFACTORY
POTASSIUM_SODIUM_CALCIUM_ALUMINIUM_ZINC_LEAD_COPER_SILVER
buh it works!

and please send cats monkeys and zebras in large high cages, make sure give padlocks
potassium, sodium, calcium, magnesium, aluminium, zinc, iron, lead, hydrogen, copper, mercury, silver, gold, Pd(dunt remember the element name. this one isnt imp)

 

[Aneeq]

oh yes, how did i forget that

whats the answer?

 

[asd]

Dudes, Why change *C to K ? The change in temp would still remain same!

 

[Fallen316]

whats the answer?

2.1*10^8

 

[asd]

..

2.1*10^8

How do you get that?

 

[Mayedah]

2.1*10^8

Yeah got the same !

 

[Mayedah]

..
How do you get that?

U have to convert degrees into kelvin x mass in kgs and thn multiply by specific heat capacity !

 

[Fallen316]

..
How do you get that?

(200/1000)*(35+273)*(3.6*10^6)

 

[asd]

U have to convert degrees into kelvin x mass in kgs and thn multiply by specific heat capacity !

That would be 2.2*10^8 ?

 

[Mayedah]

That would be 2.2*10^8 ?

Yeah u rounded off ..its correct !

 

[asd]

(200/1000)*(35+273)*(3.6*10^6)

Didn't know we'd convert into K after finding the change in temp.

 

[Dukeofwin]

People, explain the ques below

 

[Dukeofwin]

i have one for reactivity series aswell
though its senseless!
POPULAR SCIENTIST CAN MAKE A ZOO IN LESS HUMID CLIMATE SATISFACTORY
POTASSIUM_SODIUM_CALCIUM_MAGNESIUM_ALUMINIUM_ZINC_IRON_LEAD_HYDROGEN_COPER_SILVER
buh it works!

Yup i've got one too
Paul Serves Cafe Magical All Zappy, I Love Hannah Cuz She is Gorgeous
POTASSIUM_SODIUM_CALCIUM_MAGNESIUM_ALUMINIUM_ZINC_IRON_LEAD_HYDROGEN_COPER_SILVE_GOLD

 

[Mayedah]

People, explain the ques below

Is the answer A ...im getting tht !

 

[asd]

Is the answer A ...im getting tht !

Correct!

 

[convent2012]

find the heat given out by 30kg ice at -42degreeC to bring its m.p , if s.p heat capaicity for ice is 2100 J/kgK-1 ??
ANSWER PLZ !!!

 

[Dukeofwin]

Is the answer A ...im getting tht !

How? I asked for exlanation!