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Pani-rosa [81]
3 years ago
11

Unit 7 lesson 2 chemistry A final

Chemistry
1 answer:
ad-work [718]3 years ago
4 0
What is Th is suppose to mean...what are we suppose to do...
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A solution has a pH of 8.30. Determine the OH- concentration
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Answer:

Explanation:

We know that

pH +pOH = 14

Given pH = 8.30

⇒ p0H = 14-8.30 = 5.70

Since, we know that

10^{-pH} = [H^{+}]

7 0
3 years ago
Based on the following information, Cl2(g) + 2 e- → 2 Cl-(aq) E° = + 1.36 V Mg2+(aq) + 2 e- → 2 Mg(s) E° = -2.37 V which of the
Alex

Answer:

D) Mg(s)

Explanation:

We are given:

E^o_{(Cl_2/Cl^-)}= 1.36V\\E^o_{(Mg^{2+}/Mg)}=-2.37V

The substance having highest positive E^o potential will always get reduced and will undergo reduction reaction. Here, chlorine will undergo reduction reaction will get reduced.  Magnesium will undergo oxidation reaction and will get oxidized.

<u>Reducing agents are the species which reduces others and oxidizes itself. Thus, Magnesium will be the strongest reducing agent.</u>

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4 years ago
Which soil horizon contains a layer of partially weathered or unweathered rock?
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Answer:

B.  R

Explanation:

A layer of partially weathered or unweathered rock is present in R soil horizon

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