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
kkurt [141]
3 years ago
15

A bomb calorimeter has a heat capacity of 783 J/oC and contains 254 g of water whose specific heat capacity is 4.184 J/goC. How

much heat, in kilojoules, is evolved or absorbed by a reaction when the temperature goes from 23.73 oC to 26.01 oC? cH2O = 4.184 J/g.K
Chemistry
1 answer:
IrinaK [193]3 years ago
7 0

Answer : The amount of heat evolved by a reaction is, 4.81 kJ

Explanation :

Heat released by the reaction = Heat absorbed by the calorimeter + Heat absorbed by the water

q=[q_1+q_2]

q=[c_1\times \Delta T+m_2\times c_2\times \Delta T]

where,

q = heat released by the reaction

q_1 = heat absorbed by the calorimeter

q_2 = heat absorbed by the water

c_1 = specific heat of calorimeter = 783J/^oC

c_2 = specific heat of water = 4.184J/g^oC

m_2 = mass of water = 254 g

\Delta T = change in temperature = T_2-T_1=(23.73-26.01)=-2.28^oC

Now put all the given values in the above formula, we get:

q=[(783J/^oC\times -2.28^oC)+(254g\times 4.184J/g^oC\times -2.28^oC)]

q=-4208.28J=-4.81kJ

Therefore, the amount of heat evolved by a reaction is, 4.81 kJ

You might be interested in
The term used to describe the rapid release of bubbles from a liquid is _____
aksik [14]
The term used to describe the rapid release of bubbles, or rapid release of a gas from a liquid or a solution is called Effervescence.  The bubbling of a solution is due to the escape of a gas which may be from a chemical reaction, as in fermenting liquid, or by coming out of a solution after having been under pressure, as in a carbonated drink. For example; soda, champagne among others.
5 0
3 years ago
What is GMOs? ( Thanks btw )​
Sunny_sXe [5.5K]

Answer:

living organisms whose genetic material has been artificially manipulated in a laboratory through genetic engineering

Explanation:

5 0
2 years ago
A car starts from rest. It takes 6.0 seconds for the car to accelerate to 5 m/s2 W. What is the final velocity?
Artyom0805 [142]

Answer: 30 m/s

Explanation:

Use the first kinematic equation for linear motion

V=V_i+at\\V=0+(5)(6)\\v=30m/s

5 0
3 years ago
Explain, in terms of particles, what happens when methane boils and why
Ronch [10]

Answer:Butane > ethane > methane, because between bigger molecules there are stronger van der Waals forces and also higher molar mass means they need to be given more energy to have enough kinetic energy to move quickly, freely in gas.

There are multiple butene isomers (Butene) and some (2-Butenes - cis and trans) actually have higher boiling point than n-Butane (there is also Isobutane, of course, with quite much lower boiling point than all of them) and some (1-Butene, Isobutylene) have lower, so this isn't really a fair or simple question. But on simplest level, it can again be said that 1-butene has lower boiling point because it has very similar shape but slightly lower molar mass (2H less) than n-butane.

Explanation:

3 0
2 years ago
Which of the following statements is true? The boiling point is higher for 100 liters of water than for 10 liters. During deposi
mart [117]

Answer:

During deposition, a gas changes directly into a solid

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • A process or reaction which takes in heat from the surroundings is said to be
    5·1 answer
  • What is the energy of a photon of green light with a frequency of 5.80 x 10^14/s
    13·1 answer
  • Which of the following is a correct formula unit? PbCl AlP Li3Al ClO
    14·2 answers
  • Which of these characteristics differentiate electrons from protons and neutrons
    15·1 answer
  • What is the difference between a proton and a neutron?
    15·2 answers
  • Convert 60 grams of nitrogen gas (N2) to liters.
    6·1 answer
  • A covalent bond will usually form between
    13·1 answer
  • If radiation normally travels at the speed of light, why does it take longer than 100,000 years for energy from thermonuclear re
    13·1 answer
  • Which type of decay does not involve the decaying atom's atomic number to change?
    9·1 answer
  • Temperature is a measure of how much heat you have in, or around you. is it true or false
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!