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3 years ago

(07.05 HC)

Chemistry

1 answer:

aivan3 [116]3 years ago

3 0

The concentration of the solution decreases hence the time taken for the cross to become invisible increases.

<h3>Rate of reaction</h3>

The term rate of reaction refers to how quickly or slowly a reaction occurs. This is usually measured in units of time. We are now going to look at the scenario in the question.

We know that rate of reaction depends on the concentration of the reactants. The higher the concentration, the more the reacting particles in solution and the faster the rate of reaction.

As the volume of thiosulphate decreases and the volume of water increases, the concentration of the solution decreases hence the time taken for the cross to become invisible increases.

Learn more about rate of reaction: brainly.com/question/8592296

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To keep the evinermental machinces working

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Answer: First, here is the balanced reaction: 2C4H10 + 13O2 ===> 8CO2 + 10H2O.

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Explanation:

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Have a great day!

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3 years ago

List all possible oxidation numbers for the elements. 21. Al

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Answer:

21. Al (Aluminium)

+3 (most common), -1, -2, +1, +2

22. Bi (Bismuth)

+3 (most common), -3, -2, -1, +1, +2, +4, +5

23. Ni (Nickel)

+2 (most common), -2, -1, 0,+1, +3, +4

24. Xe (Xenon)

0 (most common), +1, +2, +4, +6, +8

25. Pb (Lead)

+2 (most common), +4 (most common), -4, -2, -1, +1, +3

Explanation:

Now we proceed to present the answers for each element:

21. Al (Aluminium)

+3 (most common), -1, -2, +1, +2

22. Bi (Bismuth)

+3 (most common), -3, -2, -1, +1, +2, +4, +5

23. Ni (Nickel)

+2 (most common), -2, -1, 0,+1, +3, +4

24. Xe (Xenon)

0 (most common), +1, +2, +4, +6, +8

25. Pb (Lead)

+2 (most common), +4 (most common), -4, -2, -1, +1, +3

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3 years ago