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Topic: Rearranging the formula q = mc delta T  (Read 39653 times)

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Offline Frederick95

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Rearranging the formula q = mc delta T
« on: March 06, 2008, 03:14:59 PM »
What mass of water could be heated from 0 to 50 degrees Celcius by the addition of 8.00 kJ of heat?

I know the formula for quanitiy of heat transferred in joules(J) is q = mc deltaT

However, how would I rearrange the formula to be able to solve for mass (m)?
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Offline ARGOS++

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Re: Rearranging the formula q = mc delta T
« Reply #1 on: March 06, 2008, 03:36:28 PM »

Dear Frederick95;

Which value of your Equation are you missing? Possibly c =  4.1840 kJoule kg-1 °K-1 ?
(I think “Rearranging” you learned in primary class 4, or 5, or so.)

Good Luck!
                    ARGOS++

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Offline Frederick95

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Re: Rearranging the formula q = mc delta T
« Reply #2 on: March 06, 2008, 03:37:54 PM »
So how is the formula rearranged to find m?
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Offline ARGOS++

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Re: Rearranging the formula q = mc delta T
« Reply #3 on: March 06, 2008, 04:24:29 PM »

Dear Frederick95;


   q =  c * m * ΔT    ---->   q /  ΔT  =  c * m   ---->   q /  ΔT  / c  =  m !!   
(Looks that soooo complicated?)

Good Luck!
                    ARGOS++
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