Determine the volume of o2 (at stp) formed
Determine the volume of O2 (at STP) formed when 50.0 g of KClO3 decomposes according to the following reaction. The molar mass for KClO3 is 122.55 g/mol.
2 KClO3(s) -> 2 KCl(s) + 3 O2(g)
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A 54.7-g sample of aluminum at 95.0 oC is dropped into 35.0 g of water at 40.0 oC. What is the final temperature of the mixture? (specific heat capacity of aluminum = 0.89 J/goC; specific heat capacity of water = 4.184 J/g degreesC)
The opponents of globalization focus their criticism on the role of globalization in homogenizing the world and driving wages and prices to a minimum.
Which has a rate constant given by k = 1.8×10-12 e-1370/T cm3 molecules-1 s-1. Use the following standard heats of formation. What is the activation energy of this reaction?
A gas occupying a volume of 940. mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
Special signals and spatial frequencies: Generate images of sinusoidal signals with spatial frequencies fx = 5c/ph, fy = 0c/ph, fx = 5c/ph, fy = 10c/ph, and fx = 1.5c/ph, fy = 2.5c/ph. Calculate the horizontal 5 and vertical periods of the signals
In the following experiment, a coffee-cup calorimeter containing 100. rm mL of rm H_2O is used. The initial temperature of the calorimeter is 23.0 rm ^{circ}C. If 3.70 g of rm CaCl_2 is added to the calorimeter, what will be the final temperature
The 50-lb load is hoisted by the pulley system and motor M. If the crate starts from rest and by constant acceleration attains a speed of 15 ft/s after rising s = 6 ft, determine the power that must be supplied to the motor at this instant.
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