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A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 67.9kJ of heat. Before the reaction, the volume of the system was 8.80L . After the reaction, the volume of the system was 2.80L .Calculate the total internal energy change in kilojoules.
What reagents will convert benzene to aniline the most efficiently? Also what reagents will convert toluene to p-aminobenzoic acid
Calculate the concentration of Cu2+ ion in this standard solution if the stock solution was 0.0200 M Cu2+.
a light woman and a heavy man jump from an airplance at the same time and open their same-size parachutes at the same time. which person will get to a state of zero accerlation first?
Write, using correct notation, the balanced nuclear reaction equation for each of the following:a. Electron capture by 93/43 Tc
What is the volume occupied by 0.118 mol of helium gas at a pressure of .97 atm and a temperature of 305k?
calculate the temperature (in EC) at which the vapor pressure is 760 torr. The vapor pressure of Ethanol is 115 torr at 34.9EC
A backpacker wants to carry enough fuel to heat 2.2 kg of water from 30 C degree to 100.0 C degree. If the fuel he carries produces 36 kJ of heat per gram when it burns
If 88 J of heat are added to a pure gold coin with a mass of 20 g, what is its temperature change? Specific heat capacity of gold is 0.128 J/g'C
A 28.0g sample of an unknown metal at 99.0c was placed in a constant pressure calorimeter containing 85.0g of water at 24.0c. the final temperature of the system was found to be 28.4c. calculate the specific heat of the metal (the heat capacity of..
Ammonia gas is condensed at its boiling point at 1.01325 bar at -33.4c by the application of a pressure infinitesimally greater than 1 bar. To evaporate ammonia at its boiling point requires the absorption of 23.30 kl/mol. Calculate
A solid sample containing some Fe 2+ ion weighs 1.062g. It requires 24.12 mL 0.01562 M KMno4 to titrate the Fe2+ in the dissolved sample to a pink end point.
All of the carbon atoms in the ring of carbon atoms of the benzene molecule are double bonded to each other. All of the carbon atoms in the ring of carbon atoms of the benzene molecule are single bonded to each other.
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