Problem related to specific heats
Question: Substances A and B are the same mass and at the same initial temperature. When they are heated, the final temperature of A is 55 degree C higher than the temperature of B. What does this tell you of the specific heats of A and B.
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Calculate the average power output per pulse of a laser that produces 3.0 J in a 1.0-ps pulse. If the laser operates at 480 nm how many photons are produced in a pulse?
match each of the elements on the right with he description on the left a) a dark-red liquid calcium (ca) b)a colorless gas the burns in oxygen gas gold (au) c) a metal that reacts violently with water hydrogen(H2)
How would you make a buffer with a volume of 2.0 L, pH of 5.0 and a strength of 0.25 M using 5.0 M acetic acid stock solution (Ka = 1.8x10-5) and sodium acetate ( NaO2C2H3 available as a solid salt FW = 82 g/mole).
"Calculate the CH3CO2+ in a solution that is 0.50 M CH3CO2H and 0.25 M HCl (Ka CH3CO2H = 1.8 x 10^-5)" If acetic acid will not really react with a strong acid like HCl, why is the salt given as a positive ion? Isn't a hydrogen ion present too as p
Calculate the change in entropy (in J/K) when a 67.9 g of water is heated from 14.8 ºC to 74.0 ºC at 1 atm. (The specific heat is 4.184 J/(g-K).)
How high could a 2800lb car be lifted by a gallon of gasoline given that the heat of combustion is 46.9kJ/g. The cylinder temperature is 2200K and the exit temperature is 1200K. Density of gasoline is 0.80 g/cm3.
Determine the inner diameter of the pipe (cm) at point 1. point 1 point 2 Pgauge 162kPa 97kPa Linear Velocity 4.78m/s Height above sea level 14.23m 20.35m Inner diameter of pipe 6.25cm
A solution is made by dissolving 0.75 g of salt in 100.00 g of water. Calculate the % m/m for the solution. *0.74% m/m *0.75% m/m *7.5% m/m *7.4% m/m
2.55 g of an unknown gas at 39 degrees celsius and 1.05 atm is stored in a 1.95-L flask. What is the density of the gas in L and the molar mass of the gas in g/mol
The combustion of the alternative fuel, hydrogen gas, released 286 kj per mole of hydrogen gas combusted. if 10.0 l of hydrogen gas at STP was burned to produce electricity, how long would it power a 100 watt light bulb. assume no energy is lost t
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