Question

How much heat must be removed from 300 pounds of blanched vegetables at 192 degrees F to freeze them to a temperature of 23 degrees F? (The vegetables have a 60% water content and the specific heat of solid vegetables is 0.24 BTU/lb F).

Answer #1

How much heat must be removed from 200 pounds of blanched
vegetables at 192 degrees F to freeze them to a temperature of 23
degrees F? (The vegetables have a 60% water content and the
specific heat of solid vegetables is 0.24 BTU/lb F)

How much heat must be removed from 400 pounds of blanched
vegetables at 197 degrees F to freeze them to a temperature of 25
degrees F? (The vegetables have a 60% water content and the
specific heat of solid vegetables is 0.24 BTU/lb F)

How much heat must be removed to make ice at -10 degrees C from
2kg of water at 20 degrees C (The latent heat of fusion for water
is.25X10^5 J/kg. The specific heat of water is 4190 J/kg K and for
ice is 2090 J/kg K.)
a. 7.95 X10^5
b. 8.37 X10^5
c.8.75 X10^5
d. 2.09x10^5

How much heat must be removed from 100 g of water at 25.0°C to
change it into ice at -10.0°C? The specific heat of ice is 2090
J/kg · K, and the specific heat of water is 4186 J/kg · K. For
water LF = 334,000 J/kg and LV = 2.256 ×
106 J/kg.

How much heat, in joules and in calories, must be removed from
3.61 mol of water to lower its temperature from 23.7 to 11.5°C?
Include the sign in your answer.
joules
calories

How much heat must be added to 100 g of water at an initial
temperature of 50oC to completely evaporate it? Specific
heat capacity of water is 1 cal/(oC·g), and latent heat
of vaporization is 540 cal/g.

How much heat is required to convert 5.0 kg of ice from a
temperature of - 10 0C to water vapor at a temperature of 220
degrees F?

How much energy is required to heat 36.0g H2O from a liquid at
65 degrees celsius to a gas at 115 degree celsius?
change in Hvap= 40.7 kJ/mol
Specific heat of water(liquid): Cs= 4.18 J/(g degree
Celsius)
Specific heat of water(gas): Cs= 2.01 J/(g degree Celsius)
Tboiling= 100 degree Celsius

How many mL of cream at 5 degrees with a density of
1.35g/ml must be mixed with 180ml of coffee at 95degrees so that
the resulting combinations will have a temperature of 80degres? the
specific heat of cream is 3.25j/g C. assume the density of water is
1g/ml

You have a block of ice at 32 degrees F, and a block of copper
at some other temperature. The blocks have equal mass. Exactly the
same amount of heat is added to each block. This causes the ice to
melt completely, but not to warm up past 32 degrees F. The copper
stays well below its melting point.
How much does the copper expand?
(Express your answer as a percentage, e.g. "the length of the
copper increases by 1%.")...

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