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asambeis [7]
3 years ago
10

How is a compound different than a mixture?

Chemistry
1 answer:
Vladimir [108]3 years ago
6 0

Answer:

compound is a pure substance while mixture is an impure substance

Compounds are always homogeneous whereas mixtures can be homogeneous or heterogeneous

in a compound, the ingredients are present in definite proportion while the constituents in a mixture are in variable proportion

the properties of compound are identical to the properties of it's ingredients unlike mixture wherein the properties of ingredients and the mixture are same

.. compounds are boiled or melted at definite temperature while mixture do not have a fixed melting and boiling point

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In which of the following does matter change into a new substance?
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Chemical change

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Matter changes into a new substance by changing into a chemical change. In a chemical change, the substance cannot be changed back to its previous state and a new substance is formed.

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Read the thesaurus entry and sentence.
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Answer:noun

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Which of the following would exert a gravitational force? (check all that apply) *
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Answer: B. C and A.

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“Na2SO3” represents sodium sulfite.What does the 4 mean in the formula 4Na2SO3?
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The mass of substance which consists the equal number of particles as 12 grams of Carbon-12 is said to be mole.

For example:

The balanced chemical equation for production of water from hydrogen and oxygen is:

2H_2(g) + O_2(g) \rightarrow 2H_2O(l)

That means 2 moles of H_2 reacts with 1 mole of O_2 to give 2 moles of  H_2O.

The given formula is 4Na_2SO_3.

Hence, 4 represents the number of moles in 4Na_2SO_3 formula that is 4 moles of Na_2SO_3.

The number of atoms of sodium, Na in 4Na_2SO_3 is:

4 \times 2 = 8

The number of atoms of sulfur, S in 4Na_2SO_3 is:

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The number of atoms of oxygen in, O in 4Na_2SO_3 is:

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3 years ago
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Determine if the following statements are true or false. True Standard reduction potential is an intensive property True Reducti
tensa zangetsu [6.8K]

Answer:

Standard reduction potential is an intensive property---- True

Reduction takes place at the anode ----- False

The half reaction with the lower standard reduction potential will be at the cathode in a galvanic cell ------false

The half reaction with the higher standard reduction potential will be at the cathode in a galvanic cell  ------  True

Explanation:

An intensive property is a property of a substance which is inherent in it and part of its nature. It does not depend on the amount of substance present in the substance. Standard reduction potential is an intensive property.

In a galvanic cell, oxidation takes place at the anode and reduction takes place at the cathode. At the anode, the electrode potential is more negative (an oxidation) while at the cathode the reduction potential is less negative (a reduction).

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