You are given the reaction cu + hno3 → cu(no3)2 + no + h2o. which pair of half-reactions represents the balanced half-reactions for the reaction? 3cu → cu2+ + 6e- 2n5+ + 6e- → 2n2 cu → cu2+ + 2e ns+ + 3e → n2 2cu → 2cu2+ + 6e 3n5* + 6e → 3n2+

Determine the energy released per kilogram of fuel used. given mev per reaction, calculate energy in joules per kilogram of reactants. consider 1 mole of tritium plus 1 mole of deuterium to be a mole of “reactions” (total molar mass = 5 grams).

How did planetesmals form planets? a. they broke apart into smaller chunks. b. they collided and stuck together. c. they cooled and pulled ice together. d. they began to rotate.

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