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pickupchik [31]
3 years ago
10

I really need help, I don’t know what to do on this

Chemistry
1 answer:
Shtirlitz [24]3 years ago
7 0

Answer:

A: dependent variable

B: experimental group

C: independent variable

D: control variables

E: control group

Explanation:

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As the [H+] in a solution decreases, what happens to the [OH–]? A. It increases and the pH increases. B. It increases and the pH
AleksAgata [21]
<h3><u>Answer;</u></h3>

D. It decreases and the pH increases.

<h3><u>Explanation;</u></h3>
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5 0
3 years ago
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A lithium flame has a characteristic red color due to emissions of wavelength 671 nm. What is the mass equivalence of 1 mol of p
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Answer:

1.98x10⁻¹² kg

Explanation:

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h is Planck's constant, 6.626x10⁻³⁴ J·s

c is the speed of light, 3x10⁸ m/s

and λ is the wavelenght, 671 nm (or 6.71x10⁻⁷m)

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Now we multiply that value by <em>Avogadro's number</em>, to <u>calculate the energy of 1 mol of such protons</u>:

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Finally we <u>calculate the mass equivalence</u> using the equation:

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3 years ago
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egoroff_w [7]

Answer: Mixing vinegar and baking soda initiates a chemical reaction that produces carbon dioxide and water.

Explanation:

8 0
2 years ago
Pls help if you only know the correct answer! Thanks! :)
Aleksandr [31]

18. the blank should be "CO_{2}"

19. the question seems to be answered.

20. CH_{3}

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2 years ago
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If its a solid it will stay and resist but if it isn´t then it will return to its original shape
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