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Chemistry
The neutralization reaction between aqueous potassium hydroxide and aqueous acetic acid would be written as which of the following?
Using standard molar entropy values, calculate delta standard molar entropy values for the following reactions. In each case account for the sign of delta standard molar entropy.
A solution containing 0.750 g of an unknown substance in 30.0 g of cyclohexane was found to freeze at 3.1 C. What is the molar mss of the unlown substance?
Calculate the heat released when 72.0g of steam at 131C is converted to water at 44.0C. Assume that the specific heat of water is 4.184J/gC, the specific heat of steam is 1.99J/gC and delta H of vaporization is 40.79kJ/mol for water.
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount from pure gasoline.
A 70.4 g ice cube floats in the Arctic Sea. The temperature and pressure of the system and surroundings are at 1 atm and 0°C. Calculate Ssys, ?Ssurr, and ?Suniv for the melting of the ice cube.
Problem- A student mixes 5.00 ml of 0.0020 M Fe(NO3)3 with 2.00 ml of 0.0020 M KSCN solution and 3.00 ml water at a certain temperature. The places a sample of the resulting solution in a spectrometer, and measures the transmittance as 26% at 447 ..
In an airplane, a gas sample occurs at a volume of 1.5 L at 760.0 torr. Suppose, while flying, the airplane loses pressure and the volume of the gas increases to 11.40 L.
Calculate the root mean square velocity of the CH4 molecules in a sample of CH4 gas at 281 K and at 533 K.
the solution at 100 degrees celsius, 10g of water are added, and the solution is cooled to 0 degrees celsius- the number of grams of water required to dissolve a mixture containing 15 g KNO3 and 3.5 g CuSO4 * 5 H20, assuming that the solubility of..
hydrochloric acid reacts with strontium hydroxide to yield strontium chloride and water. if 2.00 mol of hydrochloric
Would it be possible to vary the temperature of a system consisting of water and ethanol (CH3CH2OH) while maintaining an equilibrium between solid, liquid, and vapor phases?
write a report about the chemical equation about the combusiton of butane. the report must include the equation, a brief history about the combustion of butane and its importance to the world and any dangers involved.
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