#1

what is the mass of a piece of iron that changes temperature from 95 degrees C to 18.5 degrees C while warming 1.50 liters of water from 2.5 degrees C to 18.5 degrees C

specific heat of iron is .449 J/gK

must use dimensional analysis

i am completely lost on this one.

help me

specific heat of iron is .449 J/gK

must use dimensional analysis

i am completely lost on this one.

help me

#2

Try the Maths and Science thread too. 90% of the Pit are clueless right with you, and the 10% that aren't are probably in there.

#3

use google and/or the math and science thread dude, the pit wont help what-so-ever

#4

Use the formula Q = M x Cp x deltaT

So Heat = Mass x Specific Heat x change in temperature

In this problem, you compare the iron to the water using that formula, so it would be

1.50L x 4.184J/calC x (2.5-18.5C) = - M x .449J/calC x (95-18.5C)

I think....

So Heat = Mass x Specific Heat x change in temperature

In this problem, you compare the iron to the water using that formula, so it would be

1.50L x 4.184J/calC x (2.5-18.5C) = - M x .449J/calC x (95-18.5C)

I think....

#5

Seventeen.

#6

Use the formula Q = M x Cp x deltaT

So Heat = Mass x Specific Heat x change in temperature

In this problem, you compare the iron to the water using that formula, so it would be

1.50L x 4.184J/calC x (2.5-18.5C) = - M x .449J/calC x (95-18.5C)

I think....

unfortunately im not allowed formulas, i have to use dimensional analysis

#7

Use the formula Q = M x Cp x deltaT

So Heat = Mass x Specific Heat x change in temperature

In this problem, you compare the iron to the water using that formula, so it would be

1.50L x 4.184J/calC x (2.5-18.5C) = - M x .449J/calC x (95-18.5C)

I think....

"or I could be fucking with you"

#8

unfortunately im not allowed formulas, i have to use dimensional analysis

I would have suggested that formula. You sir, have been bamboozled.

#9

So I Wiki'd "dimensional analysis" and now find myself 9000% confused. Good luck fu

*cker!*
#10

Tell the teacher to **** off. You'll never use this unless you plan on being a chemist of some sort.