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2 years ago

1. ATOMIC RADIUS: For each of the following sets of atoms, rank the atoms from smallest to largest atomic radius.

Chemistry

1 answer:

Ivenika [448]2 years ago

5 0

Answer:

The answer is letter C

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The AE of a system that releases 12.4 J of heat and does 4.2 J of work on its surroundings It is_______ jA. 16.6 B. 12.4 C. 4.2

andre [41]

ANSWER

EXPLANATION

Given that

The energy released by the system is 12.4J

Work done on the surrounding is 4.2J

Follow the steps below to find the change in energy

In the given data, energy is said to be released to the surroundings

Recall, that exothermic reaction is a type of reaction in which heat is released to the surroundings. Hence, change in enthalpy is negative

Step 1; Write the formula for calculating change in energy

$\Delta E\text{ }=\text{ q }+\text{ w}$

Since heat is released to the surrounding, then q = -12J

Recall, that work done by the system on the surroundings is always negative

Hence, w = -4.2J

Step 2; Substitute the given data into the formula in step 1

$\begin{gathered} \text{ }\Delta E\text{ = q + w} \\ \text{ }\Delta E\text{ }=\text{ -12.4 }+\text{ \lparen-4.2\rparen} \\ \text{ }\Delta E\text{ = -12.4 - 4.2} \\ \text{ }\Delta E\text{ }=\text{ -16.6J} \end{gathered}$

Therefore, the change i

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1 year ago

2. When you transfer energy into a substance, the molecules' kinetic energy

GenaCL600 [577]

I don’t! Know bit I guess it’s C

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3 years ago

How does wavelength differ in high and low frequency waves?

Taya2010 [7]

Waves with higher frequencies have shorter wavelengths, and lower frequencies have longer wavelengths

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Jim brings his finger near a metal doorknob and receives a shock what does this demonstrates

qwelly [4]

Answer:

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Explanation:

Most likely, in the room, Jim was building up static electricity by friction with the floor, which he released upon contact with a metal object.

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