Answer:The final pressure i.e the pressure of the compressed gas is 273.8mmHg
Explanation:i think
The hardest mineral being a diamond and the softest being talc
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Option C= ions are exchanged between two compounds.
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A double displacement reaction, also known as a double replacement reaction or metathesis, is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products. For example,
Na2S + 2HCl → H2S + 2NaCl
Option D is incorrect because electrons are exchanged between the atoms in oxidation –reduction reactions.
