Solving Latent Heat and Thermodynamics Problems: Explained for 9th Graders

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To solve latent heat problems, use the equation Q = cm(ΔT), where Q is the heat energy, c is the specific heat capacity, m is the mass, and ΔT is the change in temperature. For phase changes, such as melting ice or boiling water, refer to latent heat tables to find the energy required for these transformations. For example, to convert 2.0 kg of ice at 0°C to water at 0°C, you would calculate the energy needed to overcome the latent heat of fusion. Similarly, converting 500 g of water at 100°C to steam at 100°C requires calculating the latent heat of vaporization. Understanding these concepts allows for effective problem-solving in thermodynamics.
gomani
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how do you slove latent heat problems?

also is there a easier way to slove thermodyamics problem?

explain in a way a way that a 9th grader like me can understand.

thanks
 
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What kind of problems?
 
i need to know the Phase change of objects and how to caculate the Joules of energy needed for the changes.
 
Generally, at that level, such problems ask for final temperature and you get the latent heat from a table. But perhaps you could be more specific...?
 
yeah

first off
"also is there a easier way to slove thermodyamics problem?"
simply put...no

you solve them by using the equation

Q=cm(delta)T
 
russ_watters said:
Generally, at that level, such problems ask for final temperature and you get the latent heat from a table. But perhaps you could be more specific...?

i would like to know more about the heat exchange in mixtures and
example would be like:

How much heat energy is required to change?
a) 2.0kg of ice at 0 C to water at 0 C?

b) 500g of water at 100 C to steam at 100 C?
 
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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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