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alexira [117]
3 years ago
13

In which step of the four-stroke engine cycle does the spark plug initiate the combustion reaction?

Chemistry
2 answers:
Doss [256]3 years ago
8 0
<h2>Answer:</h2>

Combustion stroke is the step at which four-stroke engine cycle sparks plug initiate the combustion reaction.

<h3>Explanation:</h3>
  • Combustion or ignition is known as the burning of fuel in the presence of air.
  • Combustion stroke is the third stroke in four-stroke engine .
  • In this stroke the compressed air-fuel mixture is sparked by a spark plug (in a gasoline engine) and by heat generated by high compression (diesel engines).
Dominik [7]3 years ago
4 0
ANSWER
Power stroke

EXPLANATION

At the power stroke stage, the piston is forced to move down by the expanding gases as both intake valve and exhaust valve are closed.
A spark from the spark plug contributes to ignition of the compressed fuel air mixture to released energy to perform work.
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4 years ago
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ad-work [718]
Weigh them both and there you go
8 0
3 years ago
Can someone help me with these answer becuz im struggling sorry
Bumek [7]

Answer:

21.8

Explanation:

add both because there both forces are going down

7 0
3 years ago
Ibuprofen is a drug used to manage mild pain, fever, and inflammation. It is a chiral drug, and only the S enantiomer, whose spe
madam [21]

Answer:

Specific Rotation = 105º

S% in mixture = 92%

Explanation:

Specific rotation in organic compounds varies linearly, then the enantiomeric excess can be express as:

e.e. = \frac{\alpha }{\alpha pure}

Where alpha is the specific rotation of the mixture and alpha pure is the specific rotation of the excess enantiomer.

Then, knowing that the S enantiomer is in excess you can calculate the specific rotation of that mixture:

84=\frac{\alpha }{125.0}*100

\alpha =105 Degrees

For calculating the percentage of S you should remember that the enantiometric excess is the percentage of excess of a certain enantiomer, for example in this case:

84 = S-R

Since S is in Excess

Also, it is true:

100=S+R

Then you can solve the system of linear equations, finding:

8=R\\92=S

Hope it helps!

4 0
3 years ago
In a balanced chemical equation,
Wewaii [24]

Answer:

The Answer is A

Explanation:

Please let me know if I am wrong

8 0
3 years ago
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