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soldi70 [24.7K]
3 years ago
9

Please help me I will name brainliest!

Chemistry
2 answers:
nikklg [1K]3 years ago
7 0

You'll have to record the observations in appropriate ways and organize them The way you collect your data should relate to how you're planning to analyze and use it These might for instance include entering numerical observations into a  Qualitative data are collected as descriptions anecdotes opinions quote

yaroslaw [1]3 years ago
5 0

Answer:

I organized the data collected from the lab by using a table for each test. Table A contains the data collected from the table tennis ball and the golf ball, Table B contains the data collected from the inflated football and the deflated football, and Table C contains data collected from the question baseball and the data from Table C helps to find out whether or not the baseball is legitimate or altered.

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Olenka [21]

Answer:

1. B

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3. C

4. C.

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Explanation:

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An alpha particle has the same composition as a A) hydrogen nucleus B) deuterium nucleus C) beryllium nucleus D) helium nucleus​
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Helium Nucleus

Explanation:

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What property of a wave is measuered by f
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Write at least three characteristics of acids and three characteristics of bases. These characteristics should be what makes the
ki77a [65]
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3 years ago
How the calculation of the [OH-], pH and % ionization for 0.619 M ammonia (NH3) NH3 + H2O (liq) rightwards harpoon over leftward
fomenos

Answer:

[OH⁻] = 3.34x10⁻³M; Percent ionization = 0.54%; pH = 11.52

Explanation:

Kb of the reaction:

NH3 + H2O(l) ⇄ NH4+ + OH-

Is:

Kb = 1.8x10⁻⁵ = [NH₄⁺] [OH⁻] / [NH₃]

<em>As all NH₄⁺ and OH⁻ comes from the same source we can write: </em>

<em>[NH₄⁺] = [OH⁻] = X</em>

<em>And as </em>[NH₃] = 0.619M

1.8x10⁻⁵ = [X] [X] / [0.619M]

1.11x10⁻⁵ = X²

3.34x10⁻³ = X = [NH₄⁺] = [OH⁻]

<h3>[OH⁻] = 3.34x10⁻³M</h3><h3 />

% ionization:

[NH₄⁺] / [NH₃] * 100 = 3.34x10⁻³M / 0.619M * 100 = 0.54%

pH:

As pOH = -log [OH-]

pOH = 2.48

pH = 14 - pOH

<h3>pH = 11.52</h3>
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3 years ago
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