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What is the maximum concentration (in M) of chloride ions in asolution that contains 0.100M Pb2+ The Ksp for lead(II) chloride is 1.0x10-4
If NaCl has a solubility of 36.0 g in 100 g H2O at 20degC, how many grams of water are needed to prepare a saturated solution containing 80.0 g NaCl?
If you soak the pickle in the different salt solution,such as strotium chloride, would you still observe 589nm light emission?Why of why not?
Cyclopentane, CxHy is a simple hydrocarbon. If 0.0956g of the compound is burned in oxygen, 0.300g of CO2 and 0.123g of H20 are isolated. What is the empirical formula of cyclopentane?
A fire extinguisher has a pressure of 10. atm. at 25degC. What is the pressure in atmospheres if the fire extinguisher is used ata temperature of 75degC?
A basketball is inflated to 9.0 psi (pounds per square inch) above atmospheric pressure of 14.7 psi ( a total pressure of 23.7 psi).The diameter of the basketball is 10 inches. So,
If the neutralization a 0.4321 g sample of KHP required 33.mL of sodium hydroxide, what was the molarity of the sodium hydroxide solution?
How many moles of each reactant are nedded to produce 4.00moles of HF?How many grams of F2 are required to react with 1.50 moles of NH3?
How many moles of glucose are required to form 124 g of ethanol?How many grams of ethanol would be formed from the reaction of 0.240 kg of glucose?
The Paschen Series of lines arise from electronic transitions to energy level n=3. Calculate the frequency in Hz of the light emitted by an electron falling from n=4 to n=3.
For hydrogen, ionization energy would correspond to moving the electron from n=1 to infinity,Calculate the ionization energy of one atom of hydrogen in joules.
Calculate the wavelengths of the lines in the Balmer Series from the values of N(initial) and N(final) for hydrogen. Give the wavelength in nanometer.
If 5.25mL of 0.1000 M NaOH solution is neededto just neutralize excess acid after 20.00 mL of .1 M HCl was addedto 1.00 g of an antacid, how many moles of acid can the antacid counteract per gram?
The first ionization energy for boron is 801 kJ per mole. what wavelength of light( in nanometer) would supply photons with this energy?
A 35 ml solution of .241 M Hcl is titrated with .127M of NAOH. How many ML of NAOH is required to reach equivalence point?
The reaction between Mg (s) and HCl (aq) takes place inside a calorimeter. The thermometer registers an increase in temperature for the solution inside the calorimeter.
A student obtained the silica gel TLC plate shown by spotting samples of MidolTM, caffeine, and acetaminophen on the plate and eluting with petroleum etherchloroform (9:1 v/v).
Explain why the solvent must not be allowed to evaporate from theplate during development n a thin layer chromatography.
The space shuttle uses the oxidation of methyl hydrazine, N2H3CH3(l), for propulsion. The oxidation proceeds by the following reaction: 5N2O4(g) + 4N2H3CH3(l) --> 12H2O(g) + 9N2(g) + 4CO2(g)
One hundred mL of 0.00075 M sodium sulfate, Na2SO4, and 50.0mL of 0.15 M barium chloride, BaCl2, solutions are mixed. Write the molecular and net ionicequation for the reaction that occurs in th
What is the pH of a buffer prepared by mixing 53.0 mL of 0.050M sodium bicarbonate and 19.6 mL of 0.10 M NaOH.(Carbonic Acid: pKa1 = 6.35, pKa2 = 10.33)
What is the pH of the buffer after the addition of 0.0150 mol of HCl to 850. mL of buffer? You mayassume that there is no volume change upon addition of the acid.pKb(ammonia) = 4.75.
Suppose that a 10-mL sample of a solution is to be tested for Cl- ion by addition of 1 drop (0.2mL) of 0.10 M AgNO3. What is the minimum number of grams of Cl- that must be present in order for AgCl
What volume of0.330 M acetic acid is needed to reach the equivalence point in the titration of 31.2 mL of0.0480 MKOH? Write the name and the chemical formula for the salt formed during
A saturated solution of cesium perchlorate, CsClO4, inacetone, CH3COCH3, contains 0.03g ofCsClO4, in 20.0mL of acetone at 25 degrees C. The density of acetone at this temperature is 0.7887 g/mL.