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vodka [1.7K]
3 years ago
10

Lodestone is magnetic. How might you identify weather a mineral sample might be lodestone

Chemistry
2 answers:
PIT_PIT [208]3 years ago
4 0
D because it’s magnetic
Lana71 [14]3 years ago
3 0

Answer: D

Explanation:

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Which of the following is an example of eukaryotic cells?<br> animals<br> bacteria<br> archaea
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Need help <br>1/6 + 1/8 =
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6 0
3 years ago
0.023 M solution of perchloric acid
kogti [31]
The original question is to find the pH and the pOH of 0.023 M of perchloric acid.

Answer:
pH = 1.638
pOH = 12.362

Explanation:
1- getting the pH:
pH can be calculated using the following rule:
pH = -log[H+]
Since the given solution is an acid, this means that [H+] is the same as the concentration of the solution.
This means that:
[H+] = 0.023
Substitute in the above equation to get the pH as follows:
pH = -log[0.023]
pH = 1.638

2- getting the pOH:
We know that:
pH + pOH = 14
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Substitute in the above equation to get the pOH as follows:
pOH + 1.638 = 14
pOH = 14 - 1.638
pOH = 12.362

Hope this helps :)
5 0
3 years ago
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