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A 0.2 g sample of an unknown metal (X) is dropped into hydrochloric acid and releases 68.5 mL of gas at STP. What is the molar mass of the unknown metal? X(s) + 2HCl ® XCl2(aq) + H2(g)
A 1.80-g sample of phenol (C6H5OH) was burn up in a bomb calorimeter whose total heat capacity is 11.66 kJ/°C. The temperature of the calorimeter plus contents improved from 21.36°C to 26.37°C. State a balanced chemical equation for the bomb calor..
Compute the amount, in kj/mol, by which the activation energy for the reaction is lowered by the enzyme. - Assume the free energy of the reactants is the same in both cases.
The best reagent or sequence of reagents for carrying out transformation A and transformation B are
Outline a complete mechanistic sequence for the reaction of 2-bromobutane with potasium2-methyl-2-propoxide in 2-methyl-2-propanol solvent to form thethree alkenes generated in the reaction
make a rough calculation of the amount of co2 exhaled by a person in day. with this and assuming a space crew of five
dr. browns new house will need to use propane c3h8 gas to fuel the range because natural gas service is not available
A sample of hydrogen monochloride gas occupies a volume of 50.0ml at 20.0°C. Determine the volume of the gas if the temperature is increased to 127.0°C.
a 1.30 m solution of citric acid h3c6h5o7 in water has a density of 1.10 gcm3. calculate the mass percent molality mole
The use of chlorofluorocarbons (CFCs) as refrigerants and propellants in aerosol cans has been discontinued because CFCs were depleting the ozone layer. If an aerosol can contained 500.0 mL of CFC gas at a pressure of 4.5 atm, what volume would th..
Examination of the product mixture revealed that only about half of the starting material had been consumed and practically no PhCOCHBrCH3 was present. Explain these observations and draw the product that did form in the reaction.
what is the value for the standard internal energy of formation for acetyl chloride ch3cocl
Calculate the Keq for this reaction at 25°C. - Does this reaction move forward (from left to right) or backward under standard state conditions? Explain your answer in one sentence.
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