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]
2 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]2 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
Explain how deep ocean currents form.
vivado [14]

Answer:

Deep ocean currents (also known as Thermohaline Circulation) are caused by: The sinking and transport of large masses of cool water gives rise to the thermohaline circulation, which is driven by density gradients due to variations in temperature and salinity. The earth's rotation also influences deep ocean currents.

8 0
2 years ago
How many moles of hydrogen are present in 5.30 moles of C5H10O2, propyl acetate, the compound that provides the odor and taste o
elena-s [515]

Answer:

Option D. 53 moles.

Explanation:

The following data were obtained from the question:

Number of mole of C5H10O2 = 5.3 moles

Number of mole of Hydrogen in 5.3 moles of C5H10O2 =?

From the chemical formula of propyl acetate, C5H10O2,

1 mole of C5H10O2 contains 10 moles of H.

Therefore, 5.3 moles of C5H10O2 will contain = 5.3 × 10 = 53 moles of H.

Thus, 5.3 moles of C5H10O2 contains 53 moles of H.

5 0
2 years ago
How many hydrogen atoms are in 3 molecules of ethyl alcohol, C2H3OH
Andrew [12]

Answer: 3 hydrogen atoms

Explanation: H=hydrogen

8 0
2 years ago
What periodic trends exist for electronegativity?
Anna007 [38]
The highest electronegativity is in the elements in the top left corner of the periodic table, and the lowest in the bottom right corner. Therefore, traveling up or to the left across the periodic table will increase the electronegativity 
5 0
2 years ago
What is the conclusive evidence that mixing sugar in the water is a physical change
djyliett [7]
THE DEFINITION OF PHYSICAL CHANGE: Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds. so the answer is that the form of the sugar is changing in water but if you boiled the water till its all evaporated all that will be left is the sugar
8 0
3 years ago
Other questions:
  • the grocery store sells ground beef that is labeled 20% fat. How many grams of fat would be labeled in 1.3 pounds of ground beef
    13·1 answer
  • Test (Speed, Velocity and Acceleration)
    14·1 answer
  • How much is the density of carbon dioxide gas if .392g occupies a volume of 200 ml
    13·1 answer
  • what is the molarity of a CsOH solution if 30.0 mL of the solution is neutralized by 26.4 mL 0.250M HBr solution
    14·1 answer
  • What term describes a substance that does the dissolving
    8·1 answer
  • On veut comparer l’efficacité de la configuration batch avec celle du continu CSTR pour la production de 10^3 tonnes de levures
    10·1 answer
  • Hydrogen atoms absorb energy so that the electrons are excited to n=4. Calculate the wavelength, in
    5·1 answer
  • With all his gear, Neil Armstrong weighed 360 pounds on Earth. When he landed on the Moon, he weighed 60 pounds. Why?
    7·1 answer
  • The phases of the moon repeat in a cycle about every _______ days. *
    13·1 answer
  • Cual es la formula universal de
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!