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Saccharin, one of the first non-nutritive sweeteners used in soft-drinks, is 500 times sweeter than sugar in dilute aqueous solutions. The solubility of saccharin is 1.00 gram per 290 mL of solutio
The concentration of iodine in sea water is 60. parts per billion by mass. If one assumes that the iodine exists in the form of iodide anions, what is the molarity of iodide in sea water?
Magnesium metal (0.100 mol) and a volume of aqueous hydrochloric acid that contains 0.500 mol of HCl are combined and react to completion. How many liters of hydrogen gas, measured at STP, are prod
If .750L of Ar at 1.50 atm and 177C and .235L of SO2 at 95kPa and 63C are added to a 1.00L flask and the flask's temp is adjusted to 25C, what is the resulting pressure in the flask?
A gas mixture with total pressure of 300 torr consists of equal masses of Ne(atimc weight 20) and Ar (atomic weight 40). What is the partial pressure of Ar in torr?
The value for the Ksp of silver chromate is 1.1 X 10-12. In a saturated solution of silver chromate, the silver ion concentration is found to be 2.5 X 10-4. What must the chromate ion concentration
When glucose is methylated (with dimethylsulfate in aqueous base) and then hydrolyzed (with dilute acid), the only product is 2,3,4,6-tetra-O-methyl-D-glucose.
The denisty of pure silver is 10.5gm\cm<SUP>3</SUP> at 20 degrees celcius. if 5.25 g of pure silver is added to a graduated cylinder containing 11.2 ml of water, to what volume level wi
The actual amount of calcium in the sample is 15.70%. What conclusion can you draw about the accuracy and precision of these results?
If 5 moles of Ku(l) at 40oC is combined with 4 moles of Ku(s) at 8oC and allowed to come to thermal equilibrium, what phases will be present and what will be the final temperature?
Two spheres, labeled A and B, have identical masses, but are made of different substances. The specific heat capacity of sphere A is 645 J/(kg • C°) and that of sphere B is 240 J/(kg •
If the linear expansion coefficient for aluminum is 2.3 × 10-5/C°, what is the change in the area of the plate as a result of the increase in temperature?
One mole of an ideal, monatomic gas initially at STP (Ti = 0oC, Pi =1 atm, Vi =22.4 L) experiences a reversible process in which the pressure is doubled.
An aluminum tank of volume 0.0300 m3 is filled to the top with mercury at 20.0 °C. The tank is placed inside a chamber with an interior temperature of 70.0 °C.
Water enters a pipe of diameter 3.0 cm with a velocity of 3.0 m/s. The water encounters a constriction where its velocity is 15 m/s. What is the diameter of the constricted portion of the pipe?
Hydrogen iodide, HI decomposes in the gas phase to produce Hydrogen, H2, and iodine, I2. Measuring the value of the rate constant, k.
Tripling the concentration of a reactant increases the rate of a reaction nine times. What is the order of the reaction with respect to that reactant?
A certain line in the spectrum of atomic hydrogen is associated with the electronic trasition in the H atom from the sixth energy level (n=6) to the second energy level (n=2).
What is the Ksp for lithium tetraborate if 50.0 mL of a saturated solution of lithium tetraborate requires 9.11 mL HCl to titrate the tetraborate ion?
Plasma is the fluid portion of blood. The concentration of acetylsalicylic acid (aspirin, C9H8O4, molar mass = 180.0 g/mol) in your plasma is found to be 2.99 x 10-4M after you take two tablets of
The ratio of carbon to hydrogen to nitrogen in nicotine is 5 to 7 to 1. What is the molecular formula of nicotine if its gram molecular mass is 162 g?
If 60.2 grams of Hg combines completely with 24.0 grams Br to form a compound, what is the percent composition of Hg in the compound?
Hydrogen gas can be produced by reacting aluminum with sulfuric acid. How many moles of sulfuric acid are needed to completley react with 15.0 mole of aluminum?
Calculate the pH at the equivalence point for the titration of 0.20 M aniline (C6H5NH2, Kb = 3.8 x 10-10) with 0.20 M HCl. [Hint: remember the dilution factor caused by addition of titrant to the an
How many molecules of water are produced by the reaction of 18.2 grams of propane with 80.0 liters of oxygen at STP? C3H8 + 5O2 -> 3CO2 + 4H20