Which is a compound? A) A sandwich with bread, meat, and cheese?
B) A spoon made of pure silver?
C) Nickel and oxygen reacting chemically?
D) Long and short nails in the box

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )