A car engine produces 604 kJ of mechanical energy from fuel capable of producing 2416 kJ of energy. The efficiency of the engine is

Answers

Answer 1
I think it’s 40% but I’m not sure
Answer 2

A car engine produces 604 kJ of mechanical energy from fuel capable of producing 2416 kJ of energy, then efficiency of the engine is 25%.

How do we calculate efficiency?

We can calculate the efficiency by using the below equation as:

Efficiency = (Actual production / Theoretical production) × 100%

Given that,

Actual production = 604 kJ

Theoretical production = 2,416 kJ

On putting values in given equation, we get

Efficiency = (604/2,416) × 100% = 25%

Hence efficiency of the engine is 25%.

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Related Questions

Calculate the potential energy of a block of mass of mass 0.3kg and at a height 2.6m above the ground.(take acceleration due to gravity:10m/s)​

Answers

Explanation:

Mass (m)=0.3 kg

height(h)=2.6 m

acceleration due to gravity (g)=10m/s^2

Potential energy= MGH

=0.3×10×2.6

7.8 J

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Which of the following are indicators of a healthy water source?


A.high nitrates, high pH, and low temperatures

B.low temperature, high dissolved oxygen, and neutral pH

C.low pH, high nitrates, and low dissolved oxygen

D.high turbidity, high dissolved oxygen, and high temperature

Answers

Answer:

B.

Explanation:

B. low temperature, high dissolved oxygen, and neutral pH

Hope this Helps.

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Imagine that you are Andreas Vesalius. Write a short autobiographical statement that talks about who you are, where you’re from, and some of your important contributions.

Answers

Answer:

My name is Andreas Vesalius and I'm a 16th-century Flemish anatomist, physician, and author of one of the most influential books on human anatomy, De Humani Corporis Fabrica Libri Septem. I am often referred to as the founder of modern human anatomy. I was born in Brussels, December 31, 1514 which was then part of the Habsburg Netherlands. I was a Flemish doctor who was notable for my contribution to the science of anatomy of the human body. I was the first to perform public dissection on a human corpse, a practice that was unusual in the Middle Ages due to spiritual beliefs.

Explanation:

The chemical name for MgCl3

Answers

Answer:

The chemical name is magnesium chloride

Answer:

Magnesium chloride

Please mark as brainliest if answer is right

Have a great day, be safe and healthy  

Thank u  

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How many grams of sugar (C12H22011) is needed to make a 1.3 L solution that is 0.13 M?

Answers

The answer for this question would be 150
150...........................

What is the connection between iozination energy, electronegativity, and electron affinity of elements

Answers

Answer:

Explanation:

The three of them increase from left to right across the periods of the periodic table, and at the same time, they decrease from up to down across the groups of the periodic table.

Ionization Energy is defined as the energy required to remove the atom of an electron.

Electron affinity is defined as the change in energy when electron is added to a negative ion.

Electronegativity is the ability of an atom to attract other atoms to itself.

Hydrogen gas reacts with oxygen gas to form water. At STP, how many liters of hydrogen gas react with 32.4 liter of oxygen gas? (H2 + O2 -> H2O)

Answers

Answer:

I think its 1.2L? i may be wrong

Explanation:

Recall old Avogadro's hypothesis...........

Equal volumes of gases contain AN EQUAL NUMBER of PARTICLES

And thus if there are

2.4

L

of dihydrogen, stoichiometric equivalence requires

1.2

L

of dioxygen. How many litres of water g

____N2 + ____H2  ____NH3

Answers

Answer:

N2 + 3H2 + 2NH3

Explanation:

I'm assuming you're balancing the chemical equation

[tex]nitrogen \: reacts \: with \: hydrogen.[/tex]

N2 + 3H2 → 2NH3.

Explanation:-

L.H.S.

N = 2, H = 3×2 = 6.

R.H.S.

N = 2, H = 3×2 = 6.

grade 8 chem/ science

Answers

Answer:

reactants

Explanation:

have a good day!

bacterial cells.



Which label belongs in the area marked animal?

nucleus
DNA
cell wall
ribosomes

Answers

Answer:

I believe it would be (nucleus)

how many ml of 10.0 m cacl2 do we need to prepare 3.00 l of a 0.500 m cacl2 solution

Answers

Answer:

150 mL

Explanation:

From the question given above, the following data were obtained:

Molarity of stock solution (M₁) = 10 M

Volume of diluted solution (V₂) = 3 L

Molarity of diluted solution (M₂) = 0.5 M

Volume of stock solution needed (V₁) =?

The volume of stock solution needed can be obtained as follow:

M₁V₁ = M₂V₂

10 × V₁ = 0.5 × 3

10 × V₁ = 1.5

Divide both side by 10

V₁ = 1.5 / 10

V₁ = 0.15 L

Finally, we shall convert 0.15 L to mL. This can be obtained as follow:

1 L = 1000 mL

Therefore,

0.15 L = 0.15 L × 1000 mL / 1 L

0.15 L = 150 mL

Therefore, the volume of the stock solution needed is 150 mL

Look at the chemical equation.

HI (aq) + LiOH (aq) → LiI (aq) + H2O (l)

a) What is the total ionic equation?

b) What is the net ionic equation?

c) What is/are the spectator ion(s)?

d) What is the salt that is formed?

Answers

Answer:

See explanation

Explanation:

a) The total ionic equation shows all the ions involved in the equation as follows;

H^+(aq) + I^-(aq) + Li^+(aq) + OH^-(aq) ----> Li^+(aq) + I^-(aq) + H2O(l)

b) The net ionic equation only involves the ions that truly participated in the reaction.

H^+(aq) + OH^-(aq) ----> H2O(l)

c) The spectator ions appear on both sides of the reaction equation. They are; I^- and  Li^+.

d) The salt formed is LiI (lithium iodide)

How many moles of SO3 are in 2.4 *10^23 cules?

Answers

Answer:

0.4 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

We have

[tex]n = \frac{2.4 {10}^{23} }{6.02 \times {10}^{23} } = \frac{2.4}{6.02} \\ = 0.3986...[/tex]

We have the final answer as

0.4 moles

Hope this helps you

Which of these is not an organ in the
digestive system?
A. heart
B. stomach
C. intestine

Answers

Answer:

a

Explanation:

organs are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system. The small intestine has three parts.

the heart is not apart of the digestive system
(A)

What is the number of moles of glucose (C₆H₁₂O₆) in 0.500 L of a 0.40 M solution?

Answers

Answer:

0.20 moles

Explanation:

In order to solve this problem it is necessary to keep in mind the definition of molarity:

Molarity = moles / liters

If we input the data given by the problem we're left with:

0.40 M = moles / 0.500 L

Meaning that we can proceed to calculate the number of moles:

moles = 0.40 M * 0.500 Lmoles = 0.20 moles

The number of moles of glucose ([tex]C_6H_{12}O_6[/tex]) in 0.500 Liters of a 0.40 M solution is 0.2 moles.

Given the following data:

Molarity of solution = 0.40 MVolume of solution = 0.500 L

To determine the number of moles of glucose ([tex]C_6H_{12}O_6[/tex]) in 0.500 Liters of a 0.40 M solution:

Mathematically, the molarity of a solution is given by the formula:

[tex]Molarity = \frac{number\;of\;moles}{Volume \;in\;liters}[/tex]

Making number of moles the subject of formula, we have:

[tex]Number\;of\;moles = Molarity \times Volume[/tex]

Substituting the given parameters into the formula, we have;

[tex]Number\;of\;moles = 0.40 \times 0.500[/tex]

Number of moles = 0.2 moles.

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Select the correct answer.
A compound has an empirical formula of C2H5. What is true about this empirical formula?
ОА It models the structure of the compound.
ОВ. It shows the ratio of elements in the compound.
Ос. . It gives the mass of each atom in the compound.
OD. It indicates the number of atoms in the compound.
O E. It describes only this one compound.


Answers

Answer: OB

Explanation:

The empirical formula of an element is the simplest formula of an element which shows the ratios of atoms of the each element present in a molecule of a compound .

What happens as liquid water boils?
A) The molecules are destroyed.
B) The mass of the molecules decreases.
C) The molecules become separated from each other.
D) The molecules break down into hydrogen and oxygen atoms.

Answers

Answer:

C) The molecules become separated from each other.

Explanation:

If some salt were accidently spilled as it was transferred from the balance to the cup would your calculated enthalpy of solution of the salt be too high or too low

Answers

Answer:

It would be to low

Explanation:

If some salt were accidently spilled as it was transferred from  balance to  cup  calculated enthalpy of solution of salt be too low as there will be loss in mass  which would lead less solubility of salt and hence less enthalpy.

What is solubility?

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

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atoms of which of elements will form covalent bonds in a compound
A. C and O
B. Na and F
C. Co and Fe
D. Li and Al

Answers

C and O will come together to form CO2 (carbon dioxide)

Can magic 8 ball wash with water?

Answers

Yessss of course why not

What type of molecule is shown below?
H H
| |
H-C-C-0-H
|
Η Η
A. Ether
B. Aldehyde
C. Ketone
D. Alcohol

Answers

The type of molecule that is shown is D. Alcohol

The type of molecule which is shown in the given question is alcohol, due to presence of hydroxyl group.

What are functional groups?

Funcional groups are those specific groups which after attaching to any compound changes the property of that compound and then that compound will known by the propeties of that functional group.

Given molecule has the molecular structure CH₃-CH₂-OH, means in this molecule hydroxyl group is present which defines the general properties of alcohol.

Hence given molecule is an alcohol.

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The individuality of an organism is
determined by the organism's
A) amino acids
B) DNA nucleotide sequence
C) nitrogenous bases
D) transfer RNA molecules

Answers

I think is B sorry if I’m wrong

Name the sub atomic particles in part Z of a boron atom give the relative charges of these sub atomic particles

Answers

Answer:

Neutrons and protons

Explanation:

There are three fundamental subatomic particles, these are;neutrons protons and electrons.

Ernest Rutherford successfully showed that every atom does possess a central core that contain positively charged particles (protons) called the nucleus. Chadwick later discovered the existence of neutrons.

Both protons and neutrons are found in the nucleus. Z represents the nucleus of the boron atom and houses the neutrons and protons of the boron atom.

Why is Dalton's Gas Law a problem for people who visit high altitudes?


Answers

Dalton’s law states that any given time the percentage of each of these (toxic?) gasses in the air we breathe it’s contribution.

People who ascend high altitudes experience Delton’s law when they try to breathe. Oxygen’s pressure decreases a total atmospheric pressure decreases in accordance with Dalton’s law.

Ms. Kastenberg spilled a bottle of paint outside in the sun. Over time, the paint dried. This is because:
A
The paint reflected the energy from the light
B
The light was too strong for the paint
с
The sun removed energy from the paint
D
The paint absorbed the energy from the light

Answers

Answer:

I believe that the answer is the paint absorbed the energy from the light

Explanation:

The paint dried because the paint absorbed the energy from the light and the correct option is option D.

What is absorption of light?

Light absorption is the process in which light is absorbed by matter and converted into energy. In an atom, electrons vibrate at a specific frequency – this is called the natural frequency.

If a wave of light hits a material in which the electrons are vibrating at the same frequency as the wave of light, the electrons will absorb the energy and convert it into vibrational motion.

This is why objects have different colours – different materials’ electrons will vibrate at different rates, and therefore absorb different frequencies of light.

Therefore, the paint dried because the paint absorbed the energy from the light and the correct option is option D.

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an organism that a parasite lives in or on is a
A. prey
B. host
C. consumer
D. prey

Answers

i believe it’s d, hope this helps!
The answer is B, hope this helps!

Awnser all of them if you can its really EASY im feelin generous today 30 pts

Answers

Answer: 1. Synthetic Substance or Synthetic compound 2. Oil 3. Biofuels 4. Salt and Sugar 5. medicine 6. Synthetic 7. Background Knowledge and Visualizing

Explanation: Hope this helps! Good luck!

Answer:

1= synthetic substance

2= natural gas

3= alcohol

4=artificial musks

5= medicine

6= synthetic

7=Questioning the Text

Explanation: If  my answers are correct please mark me as a brainlist.

2C2H6 + 8O2 = 4CO2 + 6H2O
My teacher wants to know how many moles are required, how many moles oaf carbon dioxide are produced and how many moles of water are produced. Can somebody please help me?

Answers

Answer:

4 moles of carbon

6 moles of water

Explanation:

I think as there no data given u have to is the numbers infront of the equation e.g 4CO2 so 4.

hope this helps :)

Nearly ¾ of the world's surface is covered with water so most of the earth's living things live in the

Answers

Answer:

ocean

Explanation:

aavssdbvsvasgvesvdbvsvdbvv

Answer:

oceans/lakes/ponds/rivers/creeks/seas

Explanation:

help me pass this test my last day of school is may 26 if you don’t mind I have more questions :)

Answers

Answer:

equal

Explanation:

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