Explain how much heat is released per mole of ethanol
Explain how much heat is released per mole of ethanol combusted for the equation C2H5OH (l) + 3O2 (g)--> 2CO2 (g) + 3H2O (g), ΔUrφ = -1373 kJ at 298 K.
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When a sample of chloroform is found to contain 98.4 g of chlorine, 11.1 g of carbon and 0.93 g of hydrogen, determine the total mass of chloroform in the second sample if a second sample of chloroform is found to contain 25.0 g of carbon.
Describe the isomers of the isopentenes (C5H10), name each isomer (IUPAC) and provides the list in order of increasing the stability.
i) The width of central maximum on a screen is around 8.10 cm. Determine how far is the screen from the slit? ii) Find out the width of the first bright fringe to the side of central maximum.
To make the concentration exactly 0.2000 M, discuss what volume of water must be added to 450.0 mL of 0.2080 M acid.
The function and how it is to be shifted is given. Determine shifted funciton and then display given function and shifted function on same screen of the graphing calculator. \(y=-5x^{2}, down 3, left 3\)
The first person is primarily moving forward with a speed of 2.40 m/s, and the second person is primarily at rest. Determine the velocities of the two people after the snowball is exchanged? Ignore the friction among the skates and the ice.
Cylcopropane (C3H6) re-arranges to propane(CH3-CH-CH2) at 500 degrees C. The reaction is a first order, and the rate constant is 6.7*10^-4s^-1.
The force is not parallel to the hill. When the coefficient of kinetic friction among the block and the slope is 0.10, determine the speed of the block as it completes its 5 m displacement.
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