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2 years ago

Consider the entropy change in the following chemical or physical processes:

Chemistry

1 answer:

Likurg_2 [28]2 years ago

3 0

Answer:

Explanation:

Recall that entropy measures the number of microstates in a substance, which is highest in gases, followed by liquids and solids. Hence, entropy increases if the products have more gaseous molecules than the reactants.

In reaction one, chlorine gas is converted into solid NaCl, so entropy decreaes.

In reaction two, four moles of gas are converted into two moles of gas, so entropy decreases.

In reaction three, ice is melted to form water, which has higher entropy. Thus, entropy increases.

In reaction four, a liquid is freezed into its solid phase, leading to a decrease in entropy.

In reaction five, oxygen gas is converted into solid MgO, so entropy decreases.

In conclusion, the answer is D.

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Answer:

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3 years ago

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2 years ago

WORTH 20 POINTS Confirmation bias is where a scientist may change the data to support a certain bias.

Orlov [11]

Answer:

True

Explanation:

Confirmation Bias is the tendency to look for information that supports, rather than rejects, one’s preconceptions, typically by interpreting evidence to confirm existing beliefs while rejecting or ignoring any conflicting data

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3 years ago

Ionic bonds usually have a ?

iVinArrow [24]

Answer:

Ionic bonding is the complete transfer of valence electron(s) between atoms.

Explanation:

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3 years ago

Read 2 more answers

a pure substance that cannot be broken down into any other substances by chemicals or physical mean is a

Nat2105 [25]

It is a element.

Pure substances includes either compunds, or elements. Elements are the simplest form of pure substance, they only consist of one kind of atoms. On the other hand, compounds contains two or more elements that are chemically combined together. Although you couldn't separate a compound by physical methods like filtration, but you can seperate them with chemical methods such as heating or electrolysis, using electricity.

Therefore, since compounds can be broken down eventually, so, the answer will be element.

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3 years ago