Homework Answers
As the least count of the thermometer is 1 °C,
∆T of water = (20 - 26) °C = - 6 °C
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Initial Final Final A student dissolves 8.00 g of NH NO() in 100. g of H2O(l)...
when a solid dissolves in water, heat may be involved or absorbed. The heat of dissolution...
when a solid dissolves in water, heat may be involved or absorbed. The heat of dissolution can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 16.27 g of BaBr2 (s) are dissolved in 100.30 g of water, the temperature of the solution increases from 24.05 to 26.76°C. The heat capacity of the calorimeter was determined in a separate experiment to be 1.87 J/degrees Celsius. Based on the students observation, calculate the...
when a solid dissolves in water, heat may be involved or absorbed. The heat of dissolution can be determined using a co...
when a solid dissolves in water, heat may be involved or absorbed. The heat of dissolution can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 1.16 g of CaCl2 (s) are dissolved in 116.30 g of water, the temperature of the solution increases from 23.65 to 25.44 °C. The heat capacity of the calorimeter was determined in a separate experiment to be 1.76 J/degrees Celsius. Based on the students observation, calculate...
If 25.0 g H2O at 85.0°C is mixed in a coffee-cup calorimeter with 15.0 g H2O...
If 25.0 g H2O at 85.0°C is mixed in a coffee-cup calorimeter with 15.0 g H2O at 20.0°C, what is the final temperature of the mixture? The specific heat of water is 4.18 J/g·°C.
In the following experiment, a coffee-cup calorimeter containing 100 g of H2O is used. The initial...
In the following experiment, a coffee-cup calorimeter containing 100 g of H2O is used. The initial temperature of the calorimeter is 23.0 oC. If 7.6 g of CaCl2is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? Assume that the heat capacity of the solution is 4.18 J/goC, and that the heat capacity of the calorimeter is negligible. The heat of dissolution ΔHsoln of CaCl2 is −82.8 kJ/mol. Enter your answer numerically in...
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial...
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the calorimeter is 23.0 ∘C. If 9.60 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution ΔHsoln of CaCl2 is −82.8 kJ/mol.
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial...
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the calorimeter is 23.0 ∘C. If 5.30 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution ΔHsoln of CaCl2 is −82.8 kJ/mol
A student performs the following experiment : a coffee cup calorimeter contains 50.0g of water at...
A student performs the following experiment : a coffee cup calorimeter contains 50.0g of water at 20.0 degrees Celsius. A student pours an unknown amount of warm water at 55.0 degrees celcius into this cup. The final temperature of the combined water is 34.6 degrees celsius. a. calculate the amount of heat absorbed by the cool water including the sign of q b. calculate the amount of heat released by the WARM water, including the sign of q c. calculate...
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial...
In the following experiment, a coffee-cup calorimeter containing 100 mL of H2O is used. The initial temperature of the calorimeter is 23.0 ∘C. If 5.60 g of CaCl2 is added to the calorimeter, what will be the final temperature of the solution in the calorimeter? The heat of solution ΔHsoln of CaCl2 is −82.8 kJ/mol. Assume that the specific heat of the solution formed in the calorimeter is the same as that for pure water: Cs=4.184 J/g⋅∘C. Express your answer...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be det...
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 2.99 g of FeBrz(s) are dissolved in 102.70 g of water, the temperature of the solution increases from 25.90 to 29.34 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.59 J/°C....
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When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 2.99 g of FeBrz(s) are dissolved in 102.70 g of water, the temperature of the solution increases from 25.90 to 29.34 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.59 J/°C....
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