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
kramer
3 years ago
14

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree

s celsius . During the reaction 69.0kJ of heat flows out of the bath and into the flask.Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is 4.18J*g*K.
Chemistry
1 answer:
Anuta_ua [19.1K]3 years ago
3 0

Answer:

309.1K

Explanation:

Step 1: Convert the flown heat to Joule

We will use the relationship 1 kJ = 1,000 J.

69.0kJ \times \frac{1,000J}{1kJ} = 69.0 \times 10^{3} J

Step 2: Convert the mass of water to gram

We will use the relationship 1 kg = 1,000 g.

8.10 kg \times \frac{1,000g}{1kg} = 8.10 \times 10^{3} g

Step 3: Convert the initial temperature to Kelvin

We will use the following expression.

K = °C + 273.15 = 33.9°C + 273.15 = 307.1 K

Step 4: Calculate the final temperature

We will use the following expression.

Q = c \times m \times (T_f - T_i)

where,

  • Q: heat
  • c: specific heat capacity
  • m: mass
  • T f: final temperature
  • T i: initial temperature

T_f = \frac{Q}{c \times m} + T_i = \frac{69.0 \times 10^{3}J }{4.18J/g.K \times 8.10 \times 10^{3}g} + 307.1K = 309.1K

You might be interested in
A galvanic (voltaic) cell has the generic metals X and Y as electrodes. X is more reactive than Y , that is, X more readily reac
Margaret [11]

Answer:

(1) cathode: Y

(2) anode X

(3) electrons in the wire flow toward: Y

(4) electrons in the wire flow away from: X

(5) anions from the salt bridge flow toward X

(6) cations from the salt bridge flow toward Y

(7) gains mass: Y

(8) looses mass X

Explanation:

The voltaic cell uses two different metal electrodes, each in an electrolyte solution. The anode will undergo oxidation and the cathode will undergo reduction. The metal of the anode will oxidize, going from an oxidation state of 0 (in the solid form) to a positive oxidation state, and it will become an ion. At the cathode, the metal ion in the solution will accept one or more electrons from the cathode, and the ion’s oxidation state will reduce to 0. This forms a solid metal that deposits on the cathode. The two electrodes must be electrically connected to each other, allowing for a flow of electrons that leave the metal of the anode and flow through this connection to the ions at the surface of the cathode. This flow of electrons is an electrical current that can be used to do work, such as turn a motor or power a light.

7 0
3 years ago
What is happening in the East African Rift Zone?
nadezda [96]

Plate is in the process of splitting into two tectonic plates

A) The techtonic plates are moving apart


7 0
2 years ago
Read 2 more answers
( copper is Cu) How many Copper atoms in 3CuSO 4<br><br> Need help ASAP !!!!!
nydimaria [60]
There are the 3 copper atoms in 3CuSO4. I hope this helps!!
5 0
2 years ago
Why are reactions of ionic compounds very fast?
galina1969 [7]
Ionic compounds<span> in solution react </span>faster<span> than molecular </span>compounds<span>. This </span>is <span>because </span>Ionic compounds<span> break apart to form free </span>ions. Therefore, there are no bonds<span> to break </span>so<span> the </span><span>reaction is fast</span>
3 0
3 years ago
You use a _______ when you are changing compounds
zvonat [6]

Answer:

snetence

Explanation:

nikkak youk dxmbk aslk istgk

3 0
2 years ago
Other questions:
  • Gasoline and motor oil are chemically similar. They are both mixtures of nonpolar hydrocarbons containing carbon and hydrogen at
    7·2 answers
  • Using 3 – 4 sentences explain (in your own words) why water expands when it freezes?
    7·2 answers
  • The substance floats or sinks in another because of its relative
    15·1 answer
  • Using the periodic table, choose the more reactive metal. Ca or Ra
    11·2 answers
  • Which of the following is made of atoms? A gravity B light C heat D air
    15·2 answers
  • Saturn has spectacular rings of ____ and ____ that surrounded the planet.
    7·2 answers
  • Which barium nitrate solution requires the greatest moles of solute?
    12·1 answer
  • Helpppp pleaseeeeeee
    14·1 answer
  • Please help me ASAP! Thank you!
    14·2 answers
  • URGENT!!!! How many molecules of carbon dioxide are produced when a molecule of C7H15 combusts?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!