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frutty [35]
3 years ago
9

Which statement BEST describes elements?

Chemistry
2 answers:
djverab [1.8K]3 years ago
4 0
B. They are composed of only one type of atom. This is your answer
maks197457 [2]3 years ago
4 0

Answer:

B

Explanation:

An element is defined as a substance composed of only one kind of atom, while an atom is defined as the smallest particle that can exist in isolation.

The reason the answer is B is because the definition of an element is that it only has one kind of atom, but apart from that, if a substance were to contain more than one kind of atom, it would then be classified as a compound.

For example, CaCO₃ (Calcium carbonate) is a compound of calcium and carbon dioxide. The reason that most substances found in nature are compounds, is that over time all the elements were exposed to things other than themselves, and thus they reacted with different elements, forming compounds.

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G identify which substitution product is expected to be favored. explain. the product with retention of configuration is expecte
ddd [48]

The substitution product that is supposed to be favoured. The product with retention of configuration is expected to predominate slightly because the leaving group blocks the nucleophile.

<h3>What is a substitution product?</h3>

A substitution product is a product that is gotten from a reaction in which a group of reactants is replaced by another group in the reaction.

Therefore, the substitution product is supposed to be favoured. The product with retention of configuration is expected to predominate slightly because the leaving group blocks the nucleophile.

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4 0
3 years ago
How many neutrons does element X have if its atomic number is 20 and its mass number is 82?
snow_tiger [21]
Protons = Atomic number
Protons + Neutrons = Mass Number
Protons = 20
Neutrons = Atomic number - Mass number
Neutrons = 82 - 20 = 62 
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3 years ago
Which of the following factors might be affected by a wildfire? a. food b. shelter c. biodiversity d. all of the above
Nady [450]
All of the above is the answer.
8 0
4 years ago
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Which example is a renewable energy source?
Ierofanga [76]
Sunlight is collected from a renewable resource, which is naturally replenished one a human timescale
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Which fundamental mechanisms appear in the reaction between pyridinium chlorochromate and a secondary alcohol
oksano4ka [1.4K]

The idea is to foretell the formation of a carbonyl compound by the reaction between alcohol and too much pyridinium chlorochromate. An oxidizing agent called pyridinium chlorochromate converts the alcohol group into the 1carbonyl group.

The carbonyl molecule that results from the reaction will depend on the reactant's OH group. Pyridinium chlorochromate [PCC] converts primary OH to aldehydes, whereas it converts secondary OH to ketones, and oxidation of tertiary OH has little effect. Alcohols and pyridinium chlorochromate [PCC] react to create a carbonyl molecule.

From primary alcohols to aldehydes and from secondary alcohols to ketones, pyridinium chlorochromate oxidizes alcohols one step up the oxidation ladder. pyridinium chlorochromate will not oxidize aldehydes to carboxylic acids, in contrast to chromic acid. Comparable to Pyridine (the Collins reagent) and CrO3 will both oxidize primary alcohols to aldehydes. Here are two instances of pyridinium chlorochromate being used.

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6 0
2 years ago
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