A blacksmith cools a 1.30 kg chunk of iron, initially at a temperature of 650.0∘C, by trickling 14.0 ∘C water over it. All the water boils away, and the iron ends up at a temperature of 120.0∘C.   How much water did the blacksmith trickle over the iron?

An aluminum rod is heated to 245 ºC and placed in a coffee cup calorimeter containing 250.0 g of water at 22.0 ºC. After the system has reached thermal equilibrium, the temperature of the water is found to be 49.0 ºC. What was the mass of the rod? Assume no heat is lost to the calorimeter.Cs(Al) = 0.921 J g-1 ºC-1Cs(H2O) = 4.18 J g-1 ºC-1

A 283 g silver figure of a polar bear is dropped into the 249 g aluminum cup of a well-insulated calorimeter containing 265 g of liquid water at 20.9°C. The bear's initial temperature is 98.5°C. What is the final temperature of the water, cup, and bear when they reach thermal equilibrium? The specific heats of silver, aluminum, and liquid water are, respectively, 234 J/ (kg-K), 910 J/ (kg-K), and 4190 J/ (kg-K). final temperature: °C

Assume Lake Michigan contains 4.90 x 1012 m³ of water, and assume the water's density is that of water at 20°C and 1 atm. (a) How much energy (in J) is required to raise the temperature of that volume of water from 12.2°C to 24.4°C? 4.1E19 From the density of water and the volume, what is the mass of the water? What is specific heat? How is it related to the energy input, mass, and temperature change? Use it to solve for the energy. Be careful with units. J (b) How many years would it take to supply this amount of energy by using a power of 1,400 MW generated by an electric power plant? 926 How is power related to energy and time? Knowing the energy from part (a), can you find the time? Be careful with units. Make sure you convert the time in seconds to years. yr