8. A student collects the following data in their lab. Trial
Temperature
Reaction Rate

Once they collect their data they develop a claim-evidence-reasoning statement
Claim: The rate of a reaction decreases as the temperature decreases.
Evidence: As the temperature of the reaction increased from 10°C to 25°C the reaction rate increased from 60
seconds to 90 seconds.
Reasoning: Reaction rate depends on the temperature of the reactants. So when the temperature decreases, so
should the reaction rate. Particles need to collide in order to react. Lower temperatures allow molecules to move
slow enough to stick together and react so the reaction rate decreases.
Use the space below to provide feedback to the student. Was their conclusion correct? How should they fix it?

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

Which other elements contain the same number of outer electrons as sodium

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?