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A- a small volume of cold water is used to cool off a cup of coffee...

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Chemistry

A- a small volume of cold water is used to cool off a cup ofcoffee that is initially too hot to drink. How many mL of water at4.0oC must be mixed with 485 mL of hot coffee (95.0oC) so that theresulting combination has a temperature of 70.0oC? Assume that thecoffee and water have the same density and specificheat.   

B- A 5.00 cm3 sample of aluminum at room temperature(25.00oC) was dropped into a 1 L beaker of boiling water(100.00oC) and allowed to come to equilibrium. How muchheat was absorbed by the aluminum cube? The specific heat capacityof aluminum is 0.902 J/g·K and its density is 2.70g/cm3.

C- When 50.00 g of 0.200 M NaCl (aq) at 24.1oC isadded to 100.0 g of 0.100 M AgNO3 (aq) at24.1oC in a calorimeter, the temperature increases to25.2oC as AgCl (s) forms. Assuming the specific heat of thesolution and products is 4.20 J/goC, calculate thenumber of joules of heat produced in the reaction.

  

Answer & Explanation Solved by verified expert
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A a small volume of cold water is used to cool off a cup of coffee that is initially too hot to drink How many mL of water at 40oC must be mixed with 485 mL of hot coffee 950oC so that the resulting combination has a temperature of 700oC Assume that the coffee and water have the same density and specific    See Answer
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