Calculating Heat Required to Raise Water Temperature to 100°C

AI Thread Summary
To calculate the heat required to raise the temperature of 10.0 kg of water from 20.0°C to 100°C, the formula used is Delta Q = mass × specific heat × change in temperature. The change in temperature is determined by subtracting the initial temperature from the final temperature, resulting in 80°C. The specific heat of water is necessary for this calculation, which is approximately 4.18 J/g°C. By multiplying the mass (10,000 g) by the specific heat and the temperature change, the total heat required can be calculated. It is essential to reference the specific heat of water to complete the calculation accurately.
rijo664
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The question states.

Peter is heating water on the stove to boil eggs for a picnic. How much heat is required to raise the temperature of his 10.0 kg vat of water from 20.0 degrees celcius too 100 degree celcius.

I worked out my problem in this format

Delta Q= mass times specific heat times that change in temperature.

first i subtracted 100 degree celcius with 20.0 degree celcius and i got 80. idk were to go from here. i am stuck. because i don't have specific heat what am i suppose to do. how am i suppose to know how much heat is requred.
 
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rijo664 said:
The question states.

Peter is heating water on the stove to boil eggs for a picnic. How much heat is required to raise the temperature of his 10.0 kg vat of water from 20.0 degrees celcius too 100 degree celcius.

I worked out my problem in this format

Delta Q= mass times specific heat times that change in temperature.

first i subtracted 100 degree celcius with 20.0 degree celcius and i got 80. idk were to go from here. i am stuck. because i don't have specific heat what am i suppose to do. how am i suppose to know how much heat is requred.

Look up the specific heat of water.
 
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
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