1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BARSIC [14]
3 years ago
10

A student is preparing to perform a series of calorimetry experiments. She first wishes to determine the calorimeter constant (C

cal) for her coffee cup calorimeter. She pours a 50.0 mL sample of water at 345 K into the calorimeter containing a 50.0 mL sample of water at 298 K. She carefully records the final temperature of the water as 317 K. What is the value of Ccal for the calorimeter
Chemistry
1 answer:
Maru [420]3 years ago
3 0

Explanation:

The given data is as follows.

     V_{1} = 50 ml,      T_{1} = 345 K

     T_{2} = 298 K,      T_{f} = 317 K,

    V_{2} = 50 ml

Now, we will calculate the heat energy as follows.

        Q_{hot} = m \times C_{p} \times (T_{1} - T_{f})

                     = 50 g \times 4.184 \times (345 - 317)

                     = 5857.6 J

       Q_{cold} = m \times C_{p} \times (T_{f} - T_{2})

                     = 50 g \times 4.184 \times (317 - 298)

                     = 3974.8 J

As,   Q_{hot} = -Q_{cold} so there will be loss of heat. And, some heat will go to the calorimeter.

Hence,     Q_{hot} = Q_{cold} + Q_{cal}

                 5857.6 = 3974.8 + Q_{cal}

               Q_{cal} = 1882.8 J

We assume that the temperature of (calorimeter + water) is 298 K. Hence,

                  dT = T_{f} - T_{2}

                        = (317 - 298) K

                        = 19 K

Hence, we will calculate the specific heat as follows.

               C = \frac{Q}{dT}

                   = \frac{1882.8 J}{19}

                   = 99.1 J/K

Thus, we can conclude that the value of C_{cal} for the calorimeter is 99.1 J/K.

You might be interested in
What are 3 benefits of being a part of the microgrid?
mamaluj [8]

Answer:

1.Improves electric reliability.

2.Enhance recovery.

3.Promotes clean energy.

Explanation:

Some people suffering from the darkness still had their lights from facilities with microgrids.Power outages they can be dangerous.Microgrids keep the power flowing by disconnecting.It also generate possibly batteries then the microgrids customers are served until power is restored on the Central grid.

3 0
3 years ago
What mass of copper is required to replace silver from 4.00g of silver nitrate dissolved in water?
larisa [96]
The balanced chemical reaction is written as:

<span>Cu +2AgNO3 → Cu(NO3)2 + 2Ag
</span>
We are given the amount of silver nitrate to be used for the reaction. This value will be the starting point of our calculations. It is as follows:

4.00 g AgNO3 ( 1 mol / 169.87 g ) ( 1 mol Cu / 2 mol AgNO3 ) ( 63.456 g / 1 mol ) = 0.747 g Cu
3 0
3 years ago
using the law of conservation of energy explain three types of energy transformations that occur during a roller coaster ride fr
AnnZ [28]

Answer:

energy a b c

Explanation:

5 0
3 years ago
Read 2 more answers
Which of the following describes a community?
Ostrovityanka [42]
I would say the answer is C
7 0
3 years ago
Read 2 more answers
In which layer(s) would a solid cube with 6 cm sides and mass of 270 g float? Explain.
DIA [1.3K]
The buoyancy of an object is dictated by its density. So let us calculate for density, where:density = mass / volume
Calculate the volume first of a solid cube:volume = (6 cm)^3 = 216 cm^3 = 216 mL
Therefore density is:density = 270 g / 216 mLdensity = 1.25 g / mL
Therefore this object will float in the layer in which the density is more than 1.25 g / mL.
6 0
3 years ago
Other questions:
  • What does the angular momentum quantum number determine?
    8·1 answer
  • What is formed from joining<br> positive and<br> negative ions
    14·1 answer
  • The energy needed to start a chemical reaction is called
    11·2 answers
  • Calculate the entropy change when 4.31 g of H2 reacts with O2 according to the reaction
    12·1 answer
  • An apple with a mass of .95 kilograms hangs from a tree beach 3.0 meters above the ground. Which is the potential energy of the
    12·1 answer
  • When humans burn fuel or cut down trees, they ( increased or decrease) levels
    15·1 answer
  • The symbol for xenon xe would be part of the noble gas notation for the element
    7·2 answers
  • If the alum reaction was done starting with 12.000 g of al, how many moles of hydrogen gas would be produced according to the ba
    9·1 answer
  • Which statement correctly describes the conductivity of the specified material?
    12·1 answer
  • Which reaction is not an example of a redox reaction?.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!