Answer:
The pressure will be halved with respect its initial value
Explanation:
Based on Boyle's law, <em>the pressure exerted by a quantity of an ideal gas is inversely proportional to the volume it occupies if the temperature and remains constant</em>
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Thus, if volume of a gas is doubled while the temperature is unchanged, <em>the pressure will be halved with respect its initial value</em>
The first one is the correct choice. We have that bases have [H+] lower than that of water since the product of H+ and OH- concentration in water is constant; in acids H+ are more than OH-, in bases H+ are less than OH- and in neutral PH (water) H+=OH- ; hence in bases OH->H+ . We have that strong bases and strong acids dissociate completely in water (by definition), their pHs are as much far from the middle of the pH scale (7) as possible (around 0 for acids or 14 for bases) and they corrode metals due to how drastic they are.
The oxidation number of Mn is 0. Details about oxidation number can be found below.
<h3>What is oxidation number?</h3>
Oxidation number is the hypothetical charge of an atom within a molecule.
However, when an atom exists independently as an element, the oxidation number of such element is 0.
The oxidation number is assigned to an atom in a element/compound. It can either be +, -, or 0 and it tells us if electrons are lost or gained.
Therefore, according to this question, the oxidation number of Mn is 0.
Learn more about oxidation number at: brainly.com/question/15167411
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