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What are the [H3O+] and the pH of a propanoate buffer that consists of 0.48 M CH3CH2COONa and 0.34 M CH3CH2COOH? Ka of propanoic acid = 1.3 multiplied by 10-5.
a quantity of liquid methanol ch3oh is introduced into a rigid 3 l vessel the vessel is sealed and the temperature is
Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the gases are allowed to mix. What would be the final pressure in torr after mixing
Calculate the amount (mL) needed of a 4.0 M phenylmagnesium chloride in THF solution to give 1.5 equivalents based on the amount of starting material used. Starting material needed
2-ethylcycloheptanol- draw the skeletal structure of the carbocation intermediate that leads to the major Organic product when this is reacted with H+ and heat.
The volume of a sample of hydrogen is 798mL and it exerts 621mmHg pressure at 5.00C. what volume does it occupy at standard temperature and pressure.
the rate constant for the second order -reaction is NOBr(g)------>NO(g)+1/2Br2(g) is 48 L/mol*min at a certian temperture. How long will it take for 90.0% of a .0200M solution of NOBr to decompose
Conjugate Pairs of Acids and Bases, What is the base if the acid is H2PO4- and the equation of the pair?
temperature of 20.0 K and a pressure of 101.3 kPa. What will be the volume when the temperature is changed to 40.0 K and the pressure is changed to 50.65 kPa?
Microwave ovens emit microwave energy with a wavelength of 12.0 cm. What is the energy of exactly one photon of this microwave radiation
Two reactions have the same activation energy, but their rates at the same temperature differ by a factor of 10. Explain.
The elemental mass percent composition of malonic acid is 34.63% C, 3.87% H, and 61.50% O. Determine the empirical formula of malonic acid. Express your answer as a chemical formula.
determine the kinetic energy of the emitted electrons when cesium is exposed to uv rays of frequency 1.3 x 1015 hz?
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