Calculate the mass in grams for a gold sample
Calculate the mass in grams for a gold sample that absorbs 245 {rm J} to change its temperature from 20.0^circ C to 40.0^circ C
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At what temperature difference, does the heat capacity of the calorimeter becomes larger than 100. J/K? At what temperature difference, does the heat capacity become negative?
How much heat energy is required to raise the temperature of 0.362kg of copper from 23.0C to 60.0C ? The specific heat of copper is 0.0920cal/(g*c) .
An airplane has a wing area (each wing) of 10 m^2. At a certain airspeed, air flows over the upper wing surface at 48 m/s and over the lower wing surface at 40 m/s. What is the mass of the plane? (The density of the air is 1.29 kg/m^3.)
A 27.0-g sample of ice at -13.0°C is mixed with 114.0 g of water at 80.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. The heat capacities of H2O(s) and H2O(l) are 2.08 and 4.18 J/g · &
What is the minimum coefficient of friction between tires and road that will allow cars to take the turn without sliding off the road? (Assume the cars do not have negative lift.)
Consider an electrochemical cell with a zinc electrode immersed in 1.0M Zn2+. calculate the concentration of Ni2+ if the cell is allowed to run to equilibrium at 25 celsius degree
If 100 mL of a 3 M solution of sodium hydroxide is diluted to a total volume of 600 mL with distilled water, what will the final concentration of sodium hydroxide be?
A tightly sealed 5.0 L flask contains argon at (6.28x10^1) deg. C and 781 mm Hg. The flask is heated until the pressure is doubled. What it the temperature of the gas?
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