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
andreev551 [17]
3 years ago
5

60 kg of fuel was completely burnt for an experiment. The amount of heat energy was found to be 180000KJ. Calculate calorific va

lue of the fuel.​
Chemistry
1 answer:
FrozenT [24]3 years ago
6 0

Answer:

3000 kJ/kg

Explanation:

The calorific value of a substance is the amount of heat produced per unit mass by the combustion of the substance.

It is given by:

C=\frac{Q}{m}

where

Q is the amount of heat released

m is the mass of the fuel

In this problem, we have:

m = 60 kg is the mass of fuel

Q=180,000 kJ is the amount of heat released

Therefore, the calorific value of the fuel is:

C=\frac{180,000}{60}=3000 kJ/kg

You might be interested in
5 point<br> How many molecules are in 50g of CO2?
Alex73 [517]

Answer:

The answer is 44.0095 molecules

7 0
3 years ago
Read 2 more answers
Why is ice cream a mixture
kvasek [131]

Ice is a mixture and it can be a compound at the same time. A mixture is when you have to substance's put together fro example you can mix salt and sugar together. But a compound is when two different elements or molecules are combined. Ice cream is a mixture or cream and sugar mainly.
7 0
3 years ago
Read 2 more answers
Why is air considered a mixture not a compound?
blondinia [14]
<span>The best reason I can think of for why we believe that air is a mixture is that freezing air slowly yields different liquids at different temperatures. Liquid nitrogen has a different boiling point than liquid oxygen. They also freeze at different temperatures. If air were only 1 compound, then air in its entirety would have a single boiling point and a single freezing point. </span>
8 0
3 years ago
How many moles in .5g of sodium bromide?
Genrish500 [490]
I'm not sure how many sign fig's you are required to have.
However I think the final answer would be 0.05 Moles, because of the .5g, that is considered 1 sign fig.

6 0
3 years ago
What is the mass of 9.67x10^23 molecules of water?
vazorg [7]
100000000000000 I think):
4 0
3 years ago
Other questions:
  • What is the mass of 2.3 moles of MgCl2?
    9·1 answer
  • To investigate the relationship between enzyme activity and substrate concentration, a student is supposed to prepare a reaction
    13·1 answer
  • What is the weight of 4.30 mole of sodium
    15·1 answer
  • PLEASE HELP!!!!!!!! All of the following are common air pollutants that can be damaging to the environment except
    6·2 answers
  • Calculate the mass, in grams, of a single tellurium atom (mte = 127.60 amu ).
    12·2 answers
  • When sodium is excited in a flame, two ultraviolet spectral lines at lambda - 372.1 nm and lambda = 376.4 nm respectively are em
    15·2 answers
  • A pendulum bob at its highest point has a certain amount of potential energy. As it falls, what does the potential energy get tr
    13·1 answer
  • Which element is the basis for all living things and can combine with other elements in many ways? a.phosphorus
    10·2 answers
  • A cup of coffee(140g) cools from 75 degrees Celsius down to comfortable room temperature 20 degrees Celsius. How much energy doe
    13·1 answer
  • If you lick boo boo and eat it, will you get sick?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!