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Paraphin [41]
3 years ago
7

What term defines a mass which is exactly equal to 1/12 the mass of one carbon-12 atom

Chemistry
1 answer:
aalyn [17]3 years ago
4 0

Answer:

Relative atomic mass and it is expressed in atomic mass unit (amu)

Explanation:

AMU:

Atomic mass unit is define as the 1/12 the mass of an atom of carbon-12.

C12 has six neutron and six protons in the nucleus.

This unit is used to express the masses of atoms. We know that masses of atoms are very small and we do not have any such type of balance that can measure very small quantity. So that is way we use this scale to measure small quantity. For example, according to this scale

relative atomic mass of hydrogen is 1.008 amu

relative atomic mass of oxygen is 15.999 amu

relative atomic mass of uranium is 238.0289 amu

relative atomic mass of chlorine is 35.453 amu

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Explanation:

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3 years ago
Given pH = 3.50 Find: [H3O+] and [OH-] Is this acidic, basic or neutral?
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Answer:

Explanation:

Given parameters:

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Unknown:

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Solution:

In order to find the unknown, we use some simple expressions which best explains the pH scale and the equilibrium systems of aqueous solutions.

         pH = -log₁₀[H₃O⁺]

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  Now we plug the value of pOH into pOH = -log₁₀ [OH⁻]

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The solution is acidic as the concentration of H₃0⁺ is more than that of the OH⁻ ions.

                   

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