5. How many atoms of hydrogen are in a molecule of acetic acid (HC2H202)?
1 answer:
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<u>Answer:</u> The force that must be applied is 15 N.
<u>Explanation:</u>
Force exerted on the object is defined as the product of mass of the object and the acceleration of the object.
Mathematically,
where,
F = force exerted = ?
m = mass of the object = 3 kg
a = acceleration of the object =
Putting values in above equation, we get:
Hence, the force that must be applied is 15 N.
Answer:
<u>Oxidation state of Mn = +4</u>
Explanation:
Atomic mass of Mn = 55g/mol
From Faraday's law of electrolysis,
Electrochemical equivalent =
i.e Z = =
= 0.0001424 g/C
But Equivalent weight, E = atomic mass ÷ valency = Z × 96,485
⇒ = 0.0001424 × 96,485
<u>∴ Valency of Mn = +4</u>