(07.01 LC)
Which statement is true about the potential energy diagram for an exothermic
reaction? (5 points)
1) Products have more potential energy than reactants.
2) The energy value remains the same throughout the diagram.
O3) It starts at a higher energy value and ends at a lower energy value.
1) The potential energy of the products is equal to the potential energy of the
reactants.
mm

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?