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(a)What is the difference between a state and a microstate of a system?
(b) As a system goes from state A to state B, its entropy decreases What can you say about the number of microstates corresponding to each state?
(c) In a particular spontaneous process, the number of microstates available to the system decreases. What can you conclude about the sign of ?Ssurr?
conversion of 0.95g of liquid water to steam at 100 clesius requires 2.1 kJ of heat. calculate the molar enthalpy of evaporation of water at 100 celsius
A volume of 60.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4)What was the molarity of the KOH solution if 22.2 mL of 1.50 M H2SO4 was needed?
Describe the error that would occur if the magnesium were to slide into the HCl in the test tube before the system is sealed off.
In the citric acid cycle, how many net atp are generated between alpha-ketogluturate and malate
If 6.73 g of Na2CO3 is dissolved in enough water to make 250.0 mL of solution, what is the molar concentration of the sodium carbonate. What are the molar concentrations of the Na+ and CO32- ions
The enthalpy change for the reaction below at 25oC is -1,850 kJ (per mole of C9H20). What is the internal energy change for the reaction at 25oC
a mixture containing only bao and cao weighs 2.00g. the oxides are converted to the corresponding mixed sulfates which
Write the overall reaction of 0.5 M diamine in 0.5 M NaOH and 0.25 M diacid chloride in cyclohexane. This was used in a polymmerization experiment to make nylon. NaOH is important to the reaction and writing out the reaction will help to explain w..
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO
An equilibrium mixture contains N2O4 , (P= 0.27 ) and NO2 (P= 1.0 ) at 350 K . The volume of the container is doubled at constant temperature.
When a particular metal is illuminated with photons, one electron is observed for each absorbed photon. What effect would decreasing the wavelength and number of photons, have on the electrons leaving the surface
1 mole of a hydrocarbon of formula CnH2n was burned completely in oxygen producing carbon dioxide and water vapour only. It required 192 g of oxygen. Work out the formula of the hydrocarbon.
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