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timofeeve [1]
3 years ago
10

When reading any volume in the laboratory, we always read where the bottom of the water curve falls. This is called the______?

Chemistry
2 answers:
zavuch27 [327]3 years ago
7 0

Answer: Meniscus

Explanation: There is a condition on reading volumes. For concave meniscus read volume in the lower part and for convex meniscus read volume at the upper part.

IgorC [24]3 years ago
6 0
Answer: convex meniscus
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Hello there!

In this case, according to the given information, it turns out firstly necessary to write out the described chemical reaction as shown below:

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Now, we set up the expression for the calculation of the standard free energy change, considering the free energy of formation of each species, specially those of H2 and F2 which are both 0 because they are pure elements:

\Delta G=2\Delta G_f^{HF}-(\Delta G_f^{H_2}+\Delta G_f^{F_2})\\\\\Delta G=2*-270.70kJ/mol-(0kJ/mol+0kJ/mol)\\\\\Delta G=-541.4kJ/mol

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2 years ago
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Answer:

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