sending signals to muscles, causing them to contract, or to glands, causing. them to produce secretions. Neurons, or nerve cells, carry out the functions of the nervous system by. conducting nerve impulses.
Best Answer: Specific Heat is the energy required to raise EACH gram of a material by 1C. This is expressed in J/gC. The temperature change is 82.1C - 30.7C = 51.4C. The Aluminum weighs, not 1g, but 625g. m x c x Î´T = Q 29.5g x 0.45J/g/Â°C x (40 - 25Â°C) Î´T = 199.125 Joules (= 0.199kJ) of heat absorbed. (you can say 0.200kJ) If 8.4kJ was used as in your initial statement, to raise the temp. by 5Â°C, the mass of iron must have been much greater than 29.5g. or, 8.4kJ is an error. 29.5 x 0.45 x 5 = 66.4 kJ.
By comparison, look at the heat capacity of copper. 1 gram of copper will rise in temperature by 1 CÂ° when just 0.385 Joules of heat is absorbed. This low specific heat capacity indicates that copper is a good conductor of heat. You might predict that applying a small amount of heat will make the temperature of a gram of copper skyrocket while the same amount of heat hardly makes the temperature of one gram of water rise at all.