For the skeletal chemical equation Fe2P(s) + S(s) → P4S10(s) + FeS(s) what is the coefficient of P4S10 in the balanced equation? (Balance the equation with the smallest possible whole number coefficients.) 1. 6 2. 18 3. 9 4. 2 5. 5 6. 10 7. 3 8. 4 9. 8 10. 1

Motivation cannot be developed with practice; a person either possesses it or they do not.

If 10.g of agno3 is available, what volume of 0.25 m agno3 can be prepared

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.