Answer:
The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).
Explanation:
The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).
Answer:
10^-7.20 or 1×10^-7.20mol.dm^-3
Explanation:
[H3O^+]= -log[H3O^+]
=antilog(-pH)
=antilog(-7.20)
=10^-7.20 mol.dm^-3
To convert atoms to moles, we need Avogadro's number (1 mol= 6.02 x 10²³ atoms)
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