Boyle's law of ideal gas: This law states that the volume of a gas is inversely proportional to its pressure at a constant temperature. Acc to this law we can write the relation of pressure and volume as:

That means:

From that equation we can calculate Volume of gas at a certain pressure:
P₁=Initial pressure
V₁=Initial volume
P₂=Final pressure
V₂= Final volume
Here P₁, initial pressure is given as 85.0 kPa
V₁, initial volume is given as 525 mL
P₂, final pressure is 65.0 kPa

so,
V_{2}=85\times 525\div 65
=686 mL
Volume of gas will be 686 mL.
Hey the answer to your question is Option C
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The group of archaea that are chemoautotrophic anaerobes that use hydrogen as an electron donor and sulfur compounds as terminal electron acceptors are the
Thermoacidophiles.
<h3>What are chemoautotrophic anaerobes?</h3>
The chemoautotrophic anaerobes are those organisms that derive energy for survival through the reduction of the following compounds:
Thermoacidophiles is a typical example of the group of archaea that are chemoautotrophic anaerobes that use hydrogen as an electron donor and sulfur compounds as terminal electron acceptors.
Learn more about anaerobes here:
brainly.com/question/16188326
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The lewis dot structure for H2CF2 would be in box form with the carbon bonded to the 2 Hydrogens and 2 Fluorines.