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lutik1710 [3]
3 years ago
7

Which unstable element is used to determine the age of volcanic rock?

Chemistry
2 answers:
Len [333]3 years ago
8 0

Answer:

C

Potassium

Explanation:

Just took test on Ed2020

77julia77 [94]3 years ago
6 0

<em><u>Answer:</u></em>

Potassium.

<u><em>Explanation:</em></u>

Therefore, the answer is Potassium. You might think, that because we were talking about Argon as well, the answer is both of them, but no. Everything starts with Potassium but it decays into Argon during the process.

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General Chemistry fourth edition by McQuarrie, Rock, and Gallogly. University Science Books presented by Macmillan Learning.
Helen [10]

Answer:

3.07 Cal/g

Explanation:

Step 1: Calculate the heat absorbed by the calorimeter

We will use the following expression.

Q = C × ΔT

where,

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Q = 37.60 kJ/°C × 2.29 °C = 86.1 kJ

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Step 2: Convert 86.1 kJ to Cal

We will use the conversion factor 1 Cal = 4.186 kJ.

86.1 kJ × 1 Cal/4.186 kJ = 20.6 Cal

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3 0
3 years ago
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Answer:

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