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3 years ago

For which of the following can the composition vary?

Chemistry

2 answers:

Mice21 [21]3 years ago

6 0

Answer:

Option a. both homogeneous and heterogeneous mixture.

Explanation:

This can be explained as a mixture is the combination of more than one substances mixed together while retaining their identities or chemical properties.

Homogeneous mixtures in which the components are mixed in the same amounts or proportion, i.e., it has uniformity in it.

Heterogeneous mixtures in which the constituents are not mixed in uniform proportion and are separable.
Pure elements are those which have the a stable isotope or the atomic number of which are same.
Thus the composition can only vary in homogeneous and heterogeneous mixtures.

Margarita [4]3 years ago

5 0

Answer: Option (a) is the correct answer.

Explanation:

A homogeneous mixture is defined as a mixture that contains evenly distributed solute particles into the solvent.

For example, NaCl dissolved in water is a homogeneous solution.

On the other hand, a solution in which solute particles are not evenly distributed into the solvent is known as a heterogeneous mixture.

For example, when sand is added to water then it forms a heterogeneous solution.

Thus, we can conclude that for both homogeneous and heterogeneous mixtures the composition vary.

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What role does valence electrons play in reactivity for an element?

kirza4 [7]

Explanation:

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2 years ago

Assuming acid strength relates directly to number of O atoms bonded to the central atom, rank H₂N₂O₂ [or (HON)₂]; HNO₃ (or HONO₂

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For Less number of oxygen atoms will be less acidic. Therefore, the rank will be.... So there is 1 oxygen atom bonded to each of the 2 nitrogen atoms.

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For HNO2 or HONO. So there are 2 oxygen atoms bonded to the nitrogen.

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Acid strength is the tendency of an acid, symbolized by the chemical formula, to dissociate into a proton, and an anion, The dissociation of a strong acid in solution is effectively complete, except in its most concentrated solutions.

The strength of a weak organic acid may depend on substituent effects. The strength of an inorganic acid depends on the atom’s oxidation state to which the proton may be attached. Acid strength is solvent-dependent. For example, hydrogen chloride is a strong acid in an aqueous solution but is a weak acid when dissolved in glacial acetic acid.

Learn more about Acid strength here:

brainly.com/question/3223615

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1 year ago