A researcher is heating a metal. He heats the metal so that the temperature of the metal rises at a constant rate. After 30 minutes of heating, the metal is 446°C. After 50 minutes, the metal is 726°C.(a)Choose the statement that best describes how the time and the temperature of the metal are related. Then fill in the blank.As time increases, the temperature of the metal decreases.Thetemperatureofthemetaldecreasesatarateof°Cperminute. As time increases, the temperature of the metal increases.Thetemperatureofthemetalincreasesatarateof°Cperminute. (b)What was the temperature of the metal when the researcher started heating it?°C

A body cools from 80 °C to 50 °C in 5 minutes. Calculate the time it takes to cool from60 °C to 30°C. The temperature of the surroundings is 20 °C.

Q1. A body at a temperature of 40ºC is kept in a surrounding of constant temperature of 20ºC. It is observed that its temperature falls to 35ºC in 10 minutes. Find how much more time will it take for the body to attain a temperature of 30ºC.

Challenge Problem: Newton’s law of cooling says that the temperature, 𝑇(𝑡) at time 𝑡, ofwhich the body is placed in an environment at temperature 𝑇0 is given by𝑇(𝑡) = 𝑇0 + 𝐶𝑒−𝑘𝑡Where 𝐶 and 𝑘 are constants.A piece of metal is heated to 300°C and then placed into a cooling liquid at 50℃. After 4minutes the metal has cooled to 175℃. Find its temperature after 12 minutes.

A hot piece of metal is placed in an airtight chamber. The metal radiates heat to the surrounding air. Which of the following would increase the amount of heat the metal radiates to the air? A. decreasing the metal's temperature B. increasing the amount of air in the chamber C. decreasing the amount of air in the chamber D. increasing the metal's temperature

Increasing the temperature of a reaction generally the rate of a reaction.