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calculate the concentration of an NaOH solution if 25.0ml of the solution is needed to neutralize 17.5ml of a 0.419M HCL solution
A steel cylinder is filled with 5.75 mol of nitrogen at 22degrees Celcius. The volume of the cyclinder is 18.4 L Calculate pressure inside the cylinder.
Calculate how many such photons are emitted per second by a 80.0-W incandescent lightbulb if we Assume that the light has an average wavelength = 510.0 nm, .
How many liters of oxygen,O2,are required for the complete combustion of 1/2 mole of pentane,C5H12 at standard conditions
Determine the mass of silver chloride is produced from 75.0 grams silver nitrate
Calculate the final temperature of 33 ml of ethanol initially at 20 degrees Celsius upon absorption of 541 J of heat. (density of ethanol =0.789 g/ml)?
Calculate the total volume of gas (at 124C and 758mmHg) produced by the complete decomposition of 1.45 kg of ammonium nitrate.
the pH of a saturated solution of a metal hydroxide MOH is 9.30. calculate the Ksp for the compound
An electron microscope employs a beam of electrons to obtain an image of an object. What energy must be imparted to each electron of the beam to obtain a wavelength of 10.0pm? Obtain the energy in electron volts (eV) (1eV= 1.602x10^-19J )
The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 130J of heat. As it expands, it does 76kJ of work. What is the change in internal energy for the system?
How many grams of sucrose (C12H22O11) must be added to 509 g of water to give a solution with a vapor pressure 0.723 mmHg less than that of pure water at 20 degrees C.
what is the energy in joules of a mole of photons with visible light of wavelength 486nm.
Multiple choice questions in organic chemistry - Which of the following statements are true about the processes of melting and freezing?
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