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3 years ago

The term meniscus refers to

Chemistry

2 answers:

valkas [14]3 years ago

8 0

Answer:

Explanation:

Is confirmed correct because i took the test and got a %100

Nastasia [14]3 years ago

4 0

Answer:

B) the curved surface of a liquid being measured

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3 years ago

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LenaWriter [7]

Answer:

huh

Explanation:

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3 years ago

Convert 23.92inHg to torr.

White raven [17]

<h3><u>Answer;</u> </h3>

= 607.568 Torr

<h3><u>Explanation; </u></h3>

1 in of mercury is equivalent to 25.4 Torr

Therefore;

23.92 InHg will be equal to;

23.92 × 25.4

<u>= 607.568 Torr</u>

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3 years ago

Hydrogen gas and fluorine gas will react to form hydrogen fluoride gas. What is the standard free energy change for this reactio

Marta_Voda [28]

Answer:

$\Delta G=-541.4kJ/mol$

Explanation:

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:

$H_2+F_2\rightarrow 2HF$

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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3 years ago

Ca3(PO4)2 + 3H2SO4  3CaSO4 + 2H3PO4.

Dominik [7]

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