Question

How much ice (in grams) would have to melt to lower the temperature of 355 mL of water from 26 ∘C to 5 ∘C? (You must consider the enthalpy in cooling the water, as well as the enthalpy in melting the ice and the enthalpy to heat the melted ice from 0∘C up to the system's final temperature of 5 ∘C. Also assume that the density of water is 1.0 g/mL.)

Express your answer using two significant figures.

Answer #1

mass of water = volume * density

= 355*1 = 355g

q = mcT

= 355*4.184*(5-26) = -31191.72J

= 31191.72J/334J/g = 93.4g of ice

How much ice (in grams) would have to melt to lower the
temperature of 350 mL of water from 26 ∘C to 4 ∘C? (Assume the
density of water is 1.0 g/mL.) Express your answer using two
significant figures.

How much ice (in grams) must melt to lower the temperature of
351 mL of water from 26 ∘C to 4 ∘C ? (Assume the density of water
is 1.0 g/mL and that the ice is at 0 ∘C, the heat of fusion of ice
is 6.02 kJ/mol.)

The heat gained by the ice melted the ice and raised the
temperature of the melted ice from its initial temperature to the
final temperature of the water in the calorimeter.
Use this information to calculate the heat of fusion per gram of
ice for each trial.
Enter your values using the correct number of significant figures.
This may be 2 or 3 digits.
heat capacity of calorimeter =56.4 J/C
q(calorimeter)+q(water) = -( q(ice)+q(ice water) )
Trial #
qwater
qcalorimeter...

A 0.4-L glass of water at 20°C is to be cooled with ice to 5°C.
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of ice at about 0°C is c = 2.11 kJ/kg·°C. The melting
temperature and the heat of fusion of ice at 1 atm are 0°C and
333.7 kJ/kg.
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Initial temperature of the water in the calorimeter = 17.6
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Final mass of temperature in the calorimeter = 0.0 degrees C
Please calculate:
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How much energy is required to heat the ice from -50C to the
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How much energy is required to...

How many grams of ice at -13°C must be added to 714 grams of
water that is initially at a temperature of 83°C to produce water
at a final temperature of 11°C. Assume that no heat is lost to the
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suppose the specific heat of ice and water is 0.49 cal/g. C ( C
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to a. raise the ice's temperature to the melting point? b. then
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