subject
Engineering, 04.12.2019 02:31 dajahp

In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. a student heats 63.45 grams of tungsten to 99.10 °c and then drops it into a cup containing 82.80 grams of water at 21.83 °c. she measures the final temperature to be 23.73 °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. assuming that no heat is lost to the surroundings calculate the specific heat of tungsten. specific heat (w) = j/g°c. 2) in the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. since the cup itself can absorb energy, a separate experiment is needed to determine the heat capacity of the calorimeter. this is known ascalibrating the calorimeter and the value determined is called the calorimeter constant. one way to do this is to use a common metal of known heat capacity. in the laboratory a student heats 91.06 grams of iron to 97.95 °c and then drops it into a cup containing 83.19 grams of water at 24.30 °c. she measures the final temperature to be 31.93 °c. using the accepted value for the specific heat of iron (see the references tool), calculate the calorimeter constant. calorimeter constant = j/°c. 3) in the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy of a solution phase reaction. a chunk of copper weighing 18.02 grams and originally at 98.25 °c is dropped into an insulated cup containing 79.08 grams of water at20.18 °c. the heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.83 j/°c. using the accepted value for the specific heat of copper (see the references tool), calculate the final temperature of the water. assume that no heat is lost to the surroundings. tfinal = °c.

ansver
Answers: 1

Another question on Engineering

question
Engineering, 03.07.2019 14:10
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
Answers: 2
question
Engineering, 03.07.2019 15:10
If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.
Answers: 1
question
Engineering, 04.07.2019 18:10
Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false
Answers: 3
question
Engineering, 04.07.2019 18:10
Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10
Answers: 1
You know the right answer?
In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used t...
Questions
question
Mathematics, 10.03.2021 14:00
question
History, 10.03.2021 14:00
question
Mathematics, 10.03.2021 14:00
Questions on the website: 13722367