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ArbitrLikvidat [17]
3 years ago
5

What is electron affinity? A. the energy change that happens when a neutral atom gains an electron B. the energy change that hap

pens when a neutral atom loses 2 electrons C. the energy change that happens when an atom with a positive charge gains an electron D. the energy change that happens when an atom with a negative charge gains an electron
Chemistry
2 answers:
lidiya [134]3 years ago
7 0
Your answer is most likely:
A.
OlgaM077 [116]3 years ago
5 0

The correct answer is A. The energy change that happens when a neutral atom gains an electron

Explanation:

In chemistry, an electron is a negatively charged particle that along with neutrons and protons form the atom and make an atom be positively charged, negatively charged or neutral. Additionally, electron affinity refers to the energy involved as in the transfer of electrons, especially as an atom that is neutral gains an electron and energy is released during this change. This occurs mainly in the gaseous state of atoms and implies the creation of bonds. Thus, electron affinity is the energy change as a neutral atom gains an electron (Option A).

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A) Atom is generally charge less,<br>why? ​
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Answer:

Explanation:

Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.

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3 years ago
What is primarily responsible for holding two nitrogen atoms together in a molecule of nitrogen gas?
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The answer is B Nitrogen atoms will form three covalent bonds (also called triple covalent) between two atoms of nitrogen because each nitrogen atom needs three electrons to fill its outermost shell. Another example of a nonpolar covalent bond is found in the methane (CH4) molecule.

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Why is fossil fuel considered a nonrenewable energy source?​
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Answer:

\boxed {\tt Takes \ many \ years \ to \ replenish}

Explanation:

A nonrenewable is a resource that cannot quickly be regenerated. A nonrenewable resource will eventually run out, and it cannot be remade for many years.

For example, <u>fossil fuel </u>is formed from fossils after millions of years of heat and pressure turn them into fuel. Since they take many years to create, they are a <em>nonrenewable energy source.</em>

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3 years ago
URGENT PLEASE HELPIf 25 grams of liquid water releases 75J of heat when water cools from 88 degrees Celsius what is the final te
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6 0
3 years ago
A sample of hydrogen gas at a pressure of 0.520 atm and a temperature of 26.2°C, occupies a volume of 15.4 liters. If the gas is
Oksanka [162]

Answer:

1.99 atm

Explanation:

Step 1:

Data obtained from the question. This include the following:

Initial pressure (P1) = 0.520 atm

Initial temperature (T1) = 26.2°C

Initial volume (V1) = 15.4L

Final temperature (T2) = constant = 26.2°C

Final volume (V2) = 4.02L

Final pressure (P2) =..?

Step 2:

Determination of the new pressure of the gas.

Since the temperature of the gas is constant, it means the gas is obeying Boyle's law. Thus, the new pressure of the gas can be obtained by applying the Boyle's law equation as shown below:

P1V1 = P2V2

0.520 x 15.4 = P2 x 4.02

Divide both side by 4.02

P2 = (0.520 x 15.4) / 4.02

P2 = 1.99 atm

Therefore, the new pressure of the gas is 1.99 atm

4 0
4 years ago
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