The answer is B. Temperate.
Lead fluoride hope this helps
The answer is B) heat will flow from the water to the copper until they both reach the same temperature
Answer: 1.284M NH3
Explanation: (12.23 grams)/(17.0 gramms/mole) = 0.7191 moles
Dissolved in 560.0 ml (=0.5600L)
(0.7191 moles)/(0.560L) = 1.284M (4 sig figs)