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Nookie1986 [14]
3 years ago
11

What does the red line running through Earth represent?

Chemistry
1 answer:
mixas84 [53]3 years ago
5 0

Answer: The Equator because it divides the Earth into the Northern and Southern hemispheres.

Explanation:

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[OH-]=2.24 X 10    M
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Calculate the pH during the titration of 30.00 mL of 0.1000 M HCOOH(aq) with 0.1000 M NaOH(aq) after 29.3 mL of the base have be
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3.336.

Explanation:

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<em />

So, <em>concentration of excess acid = [(NV)acid - (NV)base]/V total</em> = [(30.0 mL)(0.1 M) - (29.3 mL)(0.1 M)]/(59.3 mL) = <em>1.18 x 10⁻³ M.</em>

<em></em>

<em> For weak acids; [H⁺] = √Ka.C</em> = √(1.8 x 10⁻⁴)(1.18 x 10⁻³ M) = <em>4.61 x 10⁻⁴ M.</em>

∵ pH = - log[H⁺].

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7 0
4 years ago
2 reason why noble gases become less ideal in their behaviour down the group
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