When a palladium bar of mass mis dropped through a height difference Ah, its potential energy...
When a manganese bar of mass m is dropped through a height difference Δh, its potential energy changes by the amount mgΔh, where g is the acceleration of gravity, equal to 9.81 m s-2. Suppose that when the bar hits the ground, all that energy is converted to heat, increasing the temperature of the bar. If the specific heat capacity of the material in the bar is 0.479 J K-1 g-1, calculate the height from which the bar must be...
(c) Consider a 135 meter high waterfall. If the decrease in potential energy of the water (i.e., mgh) is totally converted into heat, calculate the temperature difference between the top and bottom of the waterfall. Data: m-mass, g - acceleration due to gravity = 9.81 m/s. The specific heat of water = 4.184 J/(8 °C).
A bag filled with lead shots is dropped from a height of h = 27.4 m. The total mass of the bag is m = 835.0 g. What is the increase in the temperature of the lead shots, after the bag hits the ground? The specific heat of lead is c = 130 J/kgK.
When 1436 J of heat energy is added to 41.2 g of hexane, CH,,, the temperature increases by 15.4 °C. Calculate the molar heat capacity of CH. Cp = 1/(mol·°C) Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 7.10 MJ of energy in the form of heat if the temperature of the sodium is not to increase by more than 10.0 "C? Use Cp = 30.8 J/(K.mol) for...
GENERAL CHEMISTRY GROUP STUDY SB The first 3 problems are to be submitted today. #1.(30pts, 15 pts each) (c) Consider a 135 meter high waterfall. If the decrease in potential energy of the water (i.e., mgh) is totally converted into heat, calculate the temperature difference between the top and bottom of the waterfall. Data: m-mass, g- acceleration due to gravity 9.81 m/s. The specific heat of water- 4.184 J/(g "C). (d) If a system absorbs 30.0 J of heat from...