Balance the reaction and state the type of chemical reaction it is. Type your answers in blue bold font. 1. K + Br → KBr
2. HgO → Hg + O2
3. Na + H2O → NaOH + H2
4. CaO + H2O → Ca(OH)2
5. Al + HCl → AlCl3 + H2
6. NaCl + AgNO3 → NaNO3 + AgCl
7. H2CO3 → CO2 + H2O
8. PbCl2 + NaI → PbI2 + NaCl
9. NH4OH → NH3 +H2O

After a car's engine has been running for a while, if you stand near the car's engine you can often feel heat coming from the engine as a result of a. radiation b. convection c. conduction

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.