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ahrayia [7]
4 years ago
7

What do you understand by the term positron?

Chemistry
1 answer:
egoroff_w [7]4 years ago
5 0

Answer:

A positron is a subatomic particle with the same mass as an electron and a numerically equal but positive charge.

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A redox reaction employed in an electrochemical cell has a negative . Which statement is true? a) E∘cell is positive b) K>1 E
krok68 [10]

Answer:

d. K<1 E∘cell is negative

Explanation:

Since E⁰ = negative , ΔG = -nFE⁰ = -nF -ve = +ve.

Also, ΔG = -RTlnK

K = exp(-RTΔG)

Since ΔG = +ve, -RTΔG = -ve

K = 1/exp(RTΔG) < 1.

So our answer is  E⁰ cell is negative and K < 1

5 0
4 years ago
Julia notices that the ""check engine"" light comes on while driving her car on days with temperatures of over 100 degrees. what
aev [14]

Option b), Julia's car engine overheats when the outside temperature exceeds 100 degrees is the best plausible explanation for her “check engine” light coming on while driving her car on days with temperatures over 100 degrees.

<h3>Reasoning</h3>

The other options that the engine needs to be replaced, that it cannot withstand high temperatures, or that Julia cannot drive her car on days when it is over 100 degrees outside are not plausible explanations for the situation because that is not what it indicates. the expression “check engine”

On the other hand, option b) is a plausible explanation because the light that comes on with the "Check engine" indicator is due to a temperature sensor that the engine has and that is activated once a certain temperature is exceeded.

In this case, the sensor is sensitive to a temperature differential, since it is activated when the motor compares the degrees of internal temperature with the external one.

Learn more about temperature indicators at brainly.com/question/11464844

#SPJ4

8 0
2 years ago
What is the slowest type of mass movement?
LiRa [457]

Answer:

Creep

Creep is the slowest of all the mass movements and moves the most soil out of all the mass movements. The only way to detect soil creep is to observe the fences, buildings, and other surface objects that may be in that area. As the loosened soil moves slowly downslope, these objects will move along with the soil.

Explanation:

7 0
3 years ago
A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.11 g/mL, 1.8
ehidna [41]

Answer:

D. her results are neither precise, nor accurate

Explanation:

Reason being that: First, she obtained four different result for an experiment ( obviously it's supposed to be one value for the different procedure or atleast very close range) sugar solution and all four values were far apart.

6 0
3 years ago
When may a hypothesis be revised?
Mashutka [201]
When it has been disproven
3 0
3 years ago
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