Answer:
Protactinium
Explanation:
the atomic number lines up with the number of protons and electrons an element has.
Answer: The concentration of the acid is 0.01 moles acid/0.040 L = 0.25 moles/L = 0.25 M
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Try this solution, all the details are described in the attached picture.
Cl-
Neutral (Cl) have 7 electron, but Cl- have 8 electron due to gain of 1 electron
