Find the latent heat value of the melting of the ice according
to the following information:...
Find the latent heat value of the melting of the ice according
to the following information:
MCvessel = 23 cal / oC
Cw = 1 cal / g.oC
Mass of water = 163g
Ice block = 18g
Primary water temperature = 23oC
The temperature of the mixture (water and ice) = 14oC
Solutions
Expert Solution
As heat capayof vessel is given so we can ignore it rather we
have to consider it. Please forgive me for any calculation mistake
and do comment for any short of queries.
Explain heat transfer, latent heat and change in temperature for
the following case: Ice kept at -10 degrees C temperature turns
into water at +10 degrees C temperature upon heating.
Explain specific heat, latent heat of fusion and latent heat
of vaporization. Write their mathematical relation and factors upon
which it depends.
(b) 3.5 kg ice is placed at initial temperature of −12°C. How
much heat energy is required to convert this ice completely into
steam
There are two methods A and B for studying the latent heat of
ices. The following are the collected data of the heat absorption
when the ices absorbed heat and their temperature increased from
initial -0.72℃ to temperature 0℃: Method A : 79.98, 80.04, 80.02,
80.03, 80.03, 80.04, 80.04 79.97, 80.05, 80.03, 80.02, 80.00, 80.02
Method B: 80.02, 79.94, 79.97, 79.98, 79.97, 80.03, 79.95, 79.97
Assume these data follow normal distribution with equal variance.
Test the hypothesis H0“the mean ?...
Answer the following questions:
a). The heat of fusion of ice is 6.00 kJ/mol. Find the
number of photons of wavelength = 6.27 10-6 m that must be absorbed
to melt 3.00 g of ice
b). The energy required to ionize potassium is 419
kJ/mol. What minimum frequency of light is required to ionize
potassium?
c). An X-ray photon of wavelength 0.920 nm strikes a
surface. The emitted electron has a kinetic energy of 936 eV. What
is the binding...
Dry ice is solid carbon dioxide. Instead of melting, solid
carbon dioxide sublimes according to the following equation:
CO2(s)→CO2(g). When dry ice is added to warm water, heat from the
water causes the dry ice to sublime more quickly. The evaporating
carbon dioxide produces a dense fog often used to create special
effects. In a simple dry ice fog machine, dry ice is added to warm
water in a Styrofoam cooler. The dry ice produces fog until it
evaporates away,...
Dry ice is solid carbon dioxide. Instead of melting, solid
carbon dioxide sublimes according to the following equation:
CO2(s)→CO2(g). When dry ice is added to warm
water, heat from the water causes the dry ice to sublime more
quickly. The evaporating carbon dioxide produces a dense fog often
used to create special effects. In a simple dry ice fog machine,
dry ice is added to warm water in a Styrofoam cooler. The dry ice
produces fog until it evaporates away,...
compare your experimental value for the heat of fusion of ice
with the accepted value , 6.01 kJ/mol. Comment on the comparison,
and try to explain your error ( if it exists). How would you change
your procedure to improve its accuracy ?
1. Please answer the following questions.
?What is equipartition principle? Why is
the latent heat of vaporization
for water so much larger than the
latent heat of fusion?
?Describe the Gauss's Law. If our space
is four dimensional, what will
you expect the r dependence
of the coulomb's law?
Find the heat of fusion of hte ice. You will do this by
immersing a 30mL ice cube into 150 mL of hot water
T ice = 0C
T water = 60C
T final = 43C
mass of cup: 24g
mass of ice: 28g
Mass of water: 130g
specific heat of liquid water = 4181 J/kg K
specific heat of ice = 2090 J/kg K
specific heat of aluminum (cup) = 900 J/kg K