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A foul smelling gas produced by the reaction of HCl with Na2S was collected, and 1.00 L sample was found to have a mass of 1.52 g at STP. What is the molecular mass of the gas? What is its likely formula?
Explain why the boiling point of an aqueous solution that is 1.0 m in glucose (C6H12O6) is 100.51oC whereas The boiling point of an aqueous solution that is 1.0 m in NaCl is 101.02 oC .
The pH of rainwater in a polluted area was found to be 3.50. What is the H+ concentration
Calculate the equilibrium concentration of each compound if 3.10 moles of COBr2 are placed in a 3.00 liter flask at a certain temperature. Kc = 0.140 for the reaction at this temperature.
photon of light having a wavelength of 92.30 nm. It then gives off a photon having a wavelength of 1820 nm. What is the final state of the hydrogen atom
Get a glass and fill it with cold tap water. Observe the water in the glass as it warms to room temp. What effect does temp have on the amount of gas that can remain dissolved in water? Can you use this information to explain boiling?
At volume of 0.200 M K2Cr2O7 will be required to oxidize the Fe2+ iron in 60.0 mL of .200 M FeSO4 solution?
a three carbon species that has a carbon level of zero at each carbon atom. b) two compounds that contain three carbon atoms and have a carbon atom with a carbon level of 1.
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 251 units was obtained for the intensity of the 671 nm red emission line.
calculate th volume of a chlorine solution ( in milliliters) a homeowner should add to her swimming pool if the solution contains 8.00 percent chlorine by mas and there are 5.63 x 10^4 gallons of water in the pool (1 gal = 3.79; density of liquids..
strontium metal crystalizes in a cubic unit cell which has a edge length of 612 pm. If the mass of an atom of Sr is 87.62 amu, and the density of Sr is 2.54 g/cm3.
1. Why does milk go sour and what causes the formation of curd? 2. Explain why during the experiment casein precipitates wheen hydrochloric acid is added to it.
If 8.00 kJ of heat are added to 200. g of water at 20.0 C, what is the final temperature of the water?
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