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A 0.500 g sample of a compound is dissolved in enough water to form 100.0 mL of solution. This solution has an osmotic pressure of 2.50 atm at 25.0°C. If each molecule of the solute dissociates int
The volume is roughly equivalent to a 2 L soda bottle. Also assuming standard conditions, how many moles of hydrogen does the balloon contain?
Determine the radius of an Al atom (in pm) if the density of aluminum is 2.71 g/cm3. Aluminum crystallizes in a face centered cubic structure with an edge length of 2sqrt2 r.
How many molecules of carbon dioxide are produced when 129 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
Write full electronic configuration of Period 3 element with following successive Ionization energies (ie1 = 738 KJ/mol, IE2=1450KJ/Mol, IE3 = 7732 KJ/Mol, IE4 = 10539 KJ/mol and IE5 = 13628 KJ/Mol
In an experiment, you use 8.600 g of solvent (FP = 79.3°C; Kf = 5.0°C/m) and 0.780 g of solute (molecular mass = 210.71 g/mol).
A substance has a molar extinction coefficient of 2.4x104cm-1M-1 and an absorbance of 0.10 What is the concentration of this substance in a cuvette with a 1.0 cm path length?
A 650.0g sample of zinc ( specific heat= 0.0922 cal/g X degrees Celsius) was cooled from 100.0 degrees Celsius to 29.4 degrees Celsius in a calorimeter cup containing water initially at 21.5 degrees
Solution containing a small concentration of HA is green. What color change do you expect when you dilute this solution with an equal volume of distilled water?
e. How many grams of the K2C2O4 X H2O in the salt mixture remain unreacted (in excess)? f. what is the percent by mass of each salt in the mixture?
What mass of acrylonitrile can be produced from a mixture of 2.85 kg of propylene, C3H6 (42.09 g/mol), 1.65 kg ammonia, NH3 (17.04 g/mol).
Carbonic acid, H2CO3, and the bicarbonate ion, HCO3-, are important components of the buffering system in blood plasma. The concentrations are [H2CO3] = 0.0012 M and [HCO3-] = 0.024 M. pKa for carbo
What is the net ionic equation for this acid-base neutralization reaction? After you have written the net ionic equation, describe in 1 or 2 sentences the changes undergone by the KHP molecule.
The surface area of 100 g of glucose is much larger than that of 1 g. Explain why the solubility does not increase with the amount of solid deposited at the bottom of the flask.
Using K=3.9 as the equilibrium constant, Keq, calculate the amount of isoamyl acetate that should be present at equilibrium.7.5 ml of isoamyl alcohol, 4.0ml Acetic acid(17.M), 1ml 3M sulfuric acid,
Calculate the molar composition and volumetric flow rate of the gas leaving the roasting oven per kmol of ore roasted, assuming.
calculate the concentration of an oxalic acid (H2C2O4) solution when 73.4 ml of water is added to 31.5 of 3.03 M oxalic acid solution ?
Rhodium has a face-centered cubic structure and has a density of 12.4g/cm^3. What is its atomic radius in pm?
Write an expression for the final concentration, [Cu2] f, after dilution. Units of concentration are ppm. (b) In a similar manner, write the final concentration of added standard Cu2.
If the heat of combustion for a specific compound is -1460.0 kJ/mol and its molar mass is 48.17 g/mol, how many grams of this compound must you burn to release 567.50 kJ of heat?".
The ones that give you a sunburn or fade the colors of clothes have a wavelength of about 3.0 x 10-7 meters. From this data, what can you conclude about the energy of a photon with respect to its wa
The combustion of octane produces carbon dioxide and water. If you start with 10.0 mol of octane, what mass of water (in grams) would you expect to produce?
A gas bubble forms inside a vat containing a hot liquid. If the bubble is originally at 68C and a pressure of 1.6 atm with a volume of 5.8 mL, what will its volume be if the pressure drops to 1.2 at
how much KNO3 remains in solution? how much KNO3 crystallizes out? how much CuSO4*5H2O crystallizes out? what percent of KNO3 in the sample is recovered.
What amount of hydrogen peroxide should result when 1.51 g of calcium peroxide is treated with 23.4 mL of hydrochloric acid solution containing 0.0458 g of HCl per mL?