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Give two examples of elements or compounds that undergo sublimatiom. We studied the sublimation of elemental iodine under atmospheric pressure,iodine passes directly from the solid state to the vap
The reaction below was studied at a high temperature. At equilibrium, the partial pressures of the gases are as follows: PCl5 = 1.4 × 10-4 atm, PCl3 = 2.4 × 10-2 atm, Cl2 = 3.0 × 10-
Methane has a Henry's Law constant (k) 9.88x10^-2 mol/Latm when dissolved in benzene at 25degrees C. How many grams of CH4 will dissolve in 3.00L of benzene if partial pressure is 1.48atm?
Nitrosyl bromide decomposes according to the chemical equation below.
The Ka for H2PO41- is 6.3 x 10-8. The Ka for HS1- is 1.3 x 10-13. Both are amphoteric substances. a) What does amphoteric mean? Use H2PO41- to describe your definition.
Given Fe(CH3COO)3 can dissolve in water and form the following species; Fe3+, Fe(OH)2+, Fe(OH)+2, CH3COOH, CH3COO-. Write charge and mass balance equations.
Each component contains different metals and minerals. The pebbles and shells can easily be separated from the sand. Which term or terms could be used to describe this sample of sand?
A sample of 4.00 g of a substance with a molar mass of 80.0 g/mol is combusted and the heat released is used to heat 750.0 mL of water from 15.0 degrees Celsius to 22.0 degrees Celsius. Calculate t
The vapor pressure of pure water at 25°C is 28.3 mmHg. Estimate the mass in grams of KCl needed per liter of pure water to reduce the vapor pressure of water at 25°C by 5%.
Some atomic properties depend on the average value of 1/r rather than the average value of r itself. Evaluate the expectation value of 1/r (a) a hydrogen 1s orbital, (b) a hydrogenic 2s orbital, (c)
A steel cylinder holds 1.32 g of ethanol, C2H5OH. What is the pressure of the ethanol vapor if the cylinder has a volume of 247 cm3 and the temperature is 250°C? (Assume all the ethanol is in the
A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
How to draw a diagram of sodium metal starting with one sodium atom, then two atoms, then four atoms then eight atoms and finally an infinite number of atoms?
The equilibrium constant for the reaction of bromine with chlorine to form bromine monochloride is 58.0 at some temperature. What is the value of the equilibrium constant for the following reaction?
A reaction in which A, B, and C react to form products is zero order in A, one-half order in B, and second order in C. By what factor does the reaction rate change if B is doubled (and the other react
Question: A private shipping company will accept a box for domestic shipment only if the sum of its length and girth (distance around) does not exceed 108 in. What dimensions will give a box with a
A solution containing 0.555 g of an organic solid in 22.0 mL of distilled water shows a freezing point depression of 0.65 C. Assuming Kf for water to be 1.86 K-kg/mol, what is the molar mass of the
A solution contains 8.90g of KBr in 500.0mL of solution and has an osmotic pressure of 6.99atm at 25 degree C. Calculate the van't Hoff factor for at this concentration.
An equilibrium mixture of SO2, O2, and SO3 at a high temperature contains the gases at the following concentrations: [SO2] = 3.77 x 10^-3 mol/L, [O2] = 4.30 x 10^-3 mol/L, and [SO3] = 4.13 x 10^-3
A 40.0% mass percent solution of ethylene glycol (C2H6O2) in water has a density=1.0514g/mL. Find the molality (m).
A voltaic cell is constructed that uses the following reaction and operates at 298 K. What is the emf of this cell under standard conditions?
The following density measurements were made on a bar of iron: 7.58 g/mL, 8.02 g/mL, 7.83 g/mL, 7.80 g/mL, and 7.66 g/mL. Find The error of the average of this set of measurements?
An equilibrium mixture in a 5.00 L vessel at 100 degree celsius contains 3.22 g NOBr, 3.08 g NO and 4.19 g Br2. Calculate Kc and Kp.
The Ksp for celestite is 7.6*10^-7 at 25 degrees C. How many grams of SrSO4 can you dissolve in a liter of 0.1 mole Sr(NO3)2? Assume the activity coefficients for all dissolved species are unity, and
An unknown metal M reacts with sulfur to form a compound with the formula MS. If 4.37 g of M reacts with 2.51 g of S, what are the names of M and MS?