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The accompanying diagram shows how entropy varies with temperature for a substance that is a gas at the highest temperature shown.
(a) What processes correspond to the entropy increases along the vertical lines labeled 1 and 2?
(b) Why is the entropy change for 2 larger than that for 1?
The boiling point of another member of this homologous series was found to be 309 rm K. What is the likely molecular formula for this compound?
Deuterium oxide (D20, where D is deuterium, the hydrogen-2 isotope) has an ion-product constant, kw1 of 8.9 x 10^-16 at 20 degrees Celsius. Calculate [D+] and [OD-] for pure (neutral) D20 at this temperature.
For a steel bar deformation begins at 400MPa, it has a modulus of elasticity of 207GPa. a) What is the maximum load that can be applied to a cylindrical specimen 10mm diameter and 60mm long without plastic deformation? b) What is the maximum length ..
How many grams of F2 are needed to produce 120. g of PF3 if the reaction has a 78.1% yield?
Ammonia is often produced by reacting nitrogen gas with hydrogen gas. How many liters of ammonia gas can be formed from 23.5 L of hydrogen gas at 93.0°C and a pressure of 34.7 kPa?
A 25.5 mL aliquot of HCl (aq) of unknown concentration was titrated with 0.113 M NaOH (aq). It took 51.2 mL of the base to reach the endpoint of the titration. The concentration (M) of the acid was
A reaction has a standard free energy change of -12.8 kJ mol^-1 (-3.059 kcal mol^-1). Calculate the equilibrium constant for the reaction at 25 degrees celcius.
tetrafluorethylene c2f4 effuses at rate of 4.6x10-6 moles per hour. unknown gas effuses at rate of 6.5x10-6 moles per
The melting point of a pure compound is 152-153 C. Describe the melting behavior for this compound if it is contaminated with 5% of an impurity.
Explain what is the concentration of ammonia in the solution if 24.50 mL of a 0.1160M solution of HCl are required to titrate a 100.0 mL of the solution
Question- A sample of nitrogen gas kept in a container of volume 2.3 L and a temperature of 32 oC exerts a pressure of 4.7 atm. Calculate the number of moles of gas present.
Assuming all gases are at the same pressure and temperature, how many liters of CO2 are formed from 15.0L of CO.
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