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3 years ago

What type of change is sugar dissolving in water physical or chemical

Chemistry

1 answer:

Hunter-Best [27]3 years ago

3 0

Answer:

Physical

Explanation:

No new substance is formed.

The process can be reversed using evaporation to separate the sugar from the water

So the change is physical

Hope this helps :)

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Speed.

Alexus [3.1K]

Increases with

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3 years ago

The largest ruby isnthe world is 10.9 cm long, 9.1 cm wide and 5.8 cm thick, giving

Maslowich

You have to use density=mass/volume formula:

$3.97= \frac{x}{575}$

Solve for x and you get 2282.75 grams

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3 years ago

A pharmacist has a 12% solution of boric acid and a 20% solution of boric acid. How much of each must he use to make 80 grams of

Iteru [2.4K]

Answer:

He must use 50g of the 12% solution and 30 g of the 20% solution.

Explanation:

Call x the amount of 12% boric acid solution to be used.

The content of acid of that is: 0.12x

Since he wants to make 80 grams of solution, the amount of 20% boric acid solution to be used is 80 - x.

The content of acid of that is{ 0.20(80 - x).

The final solution is 15% concentrated.

The content of boric acid of that is 0.15 × 80 g.

Now you have can write your equation:

$0.12x+0.20(80-x)=0.15\times 80$

Solve:

$0.12x + 16 - 0.20x=12\\\\-0.08x=12-16\\\\0.08x=4\\\\x=4/0.08\\\\x=50$

That is 50 grams of the 12% solution of boric acid.

Calculate the amount of the 20% solution of boric acid:

$80-x=80-50=30$

That is 30 grams.

Then, he must use 50g of the 12% solution and 30 g of the 20% solution.

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3 years ago

Which of these would most likely be one of the final steps when performing a strong acid-base titration? Prepare the burette. Re

DanielleElmas [232]

Answer is: Prepare to measure pH change.

For example for strong acid-base titration, sodium hydoxide and hydrochloric can be used.

Balanced chemical reaction: HCl + NaOH → NaCl + H₂O.

In this reaction pH of equivalence point will be always 7.

Equivalence point is the point which there is stoichiometrically equivalent amounts of acid and base.

Chemist can draw pH curve (graph showing the change in pH of a solution, which is being titrated) for titration and determine equivalence point.

Near equivalence point indicator should change color, so we must pick indicator who change color near pH of equivalence point.

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3 years ago

Read 2 more answers

Which of the following keeps satellite in orbit

BabaBlast [244]

Answer:

Gravity

Explanation:

Without gravity it would just float in space.

Please mark brainliest, i need two more to achieve expert

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3 years ago