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3 years ago

PLZ HELP!!!!!! IN YOUR OWN WORDS PLZ! :D

Chemistry

1 answer:

Neporo4naja [7]3 years ago

4 0

Answer:

String a piece of twine between the cups. Use a long piece of string to help the sound travel farther. Tie a knot in the end of the string to keep it in the cup. Decorate the cups if desired. One person can hold the phone up to their ear and the other person can talk into the other cup. Keep the string tight or the sound waves won’t travel.

Explanation:

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Need help asap will give brainly

uranmaximum [27]

Answer:

8. B

9. D

10. A

Explanation:

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3 years ago

Which of the following is not organic compound? a. CH4 b. H2CO3 c. CCl4 d. CH3-OH

Levart [38]

A. CH4 or methane which is a chemical compound

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3 years ago

How to change τhe color of silver mercury to red???

elena-14-01-66 [18.8K]

Answer: This is the hue of mercury if you're looking for it. Mercury reacts with sulphur to generate a crimson hue. In the past, they always used a thermometer.

Explanation: However, due of its toxicity, individuals have switched to using alcohol in glass thermometers, which work similarly to mercury thermometers.

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3 years ago

Which part of the atom is so small it contributes very little to the mass of an atom

sasho [114]

My part of the atom, I'm guessing you are referring to the protons, neutrons, and electrons.

The smallest of these three is the electron.

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4 years ago

A chemistry student needs of acetic acid for an experiment. He has available of a w/w solution of acetic acid in acetone. Calcul

Volgvan

Answer:

49.4 g Solution

Explanation:

There is some info missing. I think this is the original question.

A chemistry student needs 20.0g of acetic acid for an experiment. He has 400.g available of a 40.5 % w/w solution of acetic acid in acetone.

Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button. Round your answer to 3 significant digits.

We have 400 g of solution and there are 40.5 g of solute (acetic acid) per 100 grams of solution. We can use this info to find the mass of acetic acid in the solution.

$400gSolution \times \frac{40.5gSolute}{100gSolution} = 162 g Solute$

Since we only need 20.0 g of acetic acid, there is enough of it in the solution. The mass of solution that contains 20.0 g of solute is:

$20.0gSolute \times \frac{100gSolution}{40.5gSolute} = 49.4g Solution$

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3 years ago