to get the heat released or absorbed,
Q = mc(T2-T1)
m = mass of substance (units in g)
c = specific heat capacity (units in J/g-K)
T2 = final temperature
T1 = initial temperature
**note: if Q is (-), heat is released and if (+), heat is absorbed
now we can only apply this to substances that did not change its phase, but in the problem, we see that phase change occurs. from ice->water->steam
thus we need another data called it Latent Heat of Fusion and Latent Heat of Vaporization to calculate for the heat required to change its phase:
H1 = m(Lf)
H2 = m(Lv)
m = mass
Lf = Latent Heat of Fusion (fusion means melting)
Lv = Latent Heat of Vaporization (vaporization means from liquid, it becomes vapor)
the heat required to raise the LIQUID's temp (from 0 C to 100 C) is
Q1 = mc(100 - 0) = 100*75*c = 7500*c
the heat required to raise the STEAM's temp (from 100 to 135) is
Q2 = mc(135 - 100) = 35*75*c
thus the total heat needed is:
Q,total = H1 + Q1 + H2 + Q2
note that can find c, Lf and Lv of water in books or you can just google it. remember and be careful of the units.
hope this helps~ :)
chemistry - What is the energy released when steam at 25 g of steam at 10 degree...
Physics - two hundred fifty grams of iron is heated from 27 degree Celsius to ...
science - what would be the final amount of water in a mixture when 2kg ice at -...
science - how much heat is required to heat 500 g of copper from 20 degree ...
Chemistry - When ice melts, it absorbs 0.33 kJ per gram. How much ice is ...
chemistry - How much heat in kilojoules is evolved in converting 1.00 mol of ...
Physics 11th grade 3 - 1) A box with a mass of 17 kg is moving at a velocity of ...
Physics - How much heat does it take to raise 1.0kg of lead from 0 degree ...
Physics!!! - How much heat does it take to raise 1.0 kg of lead from 0 degree ...
Physics - How much heat does it take to raise 1.0 kg of lead from 0 degree ...