Estimate the density of silicon if its molar mass 28.0855 g and molar volume 1.206 x 10-5 m3.
os m. V

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

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) ! : )