What is the standard electrode potential (E) assigned to the half-reaction Cu2+ + 2e → Cu(s) when compared to the standard hydrogen half-reaction? 1
+0.34 V
2
-0.34 V
+0.52 V
4.
-0.52 V

yes

explanation:

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since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

the temperature of the gas, in k, not celsius.

it means there are 3 atoms of oxygen