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Define Chromium metal is plated onto a car bumper at a current of 10.0 amperes for 100 seconds and the plating bath contains chromium in the form of CrO42- ions. Explain how many grams of Cr are deposited in this process? (The atomic weight of Cr is 51.996).
how much limestone must be decomposed by heating to produce 150.0 grams of lime cao?assuming that the limestone
how many grams of sucrose (C12H22O11) must be dissolved in 200 g water to make a solution in which the mole fraction of sucrose is 0.1? answer in units of g.
The aromatic hydrocarbon cymene (C10H14) isfound in nearly 100 species and fragrances including coriander.anise, and thyme. The complete combustion of 1.608g of cymene in abomb calorimeter
When measuring the boiling point of a compound, why is the micro boiling point determined at the point when the last bubble has left the bottom of the bell and the liquid begins to rise in the bell
If an electrode has a potential of -1.004 V with respect to a saturated calomel electrode, what is the potential with respect to a silver-silver chloride electrode
what is the amount of heat kj required if 64.0 kg of h2o is heated from 25degc to 85degc? 200.0 g al c 0.900 at
Sulfuric acid, H2SO4, reacts with sodium chloride, NaCl, to form aqueous sodium sulfate and hydrogen chloride gas. What volume of gas will form at STP when 0.0980 kg of H2SO4 reacts with excess NaCl
canadian 10cent and 25cent coins are made of pure nickel which has a density of 8.902 gcm3. suppose each dime weighs
Copper(I) ions in aqueous solution react with NH3 according to, Cu+ + 2 NH3 Cu(NH3)2+ Kf = 6.3x10^10 M-2 Calculate the solubility of CuBr (Ksp = 5.3x10^-9) in a solution in which the equilibrium concentration of NH3 is
a 97 gram solution of silver nitrate contains 21 grams of AgNO3. what is the percent by mass of silver nitrate in this solution?
the work done when a gas is compressed in a cylinder is 351j. during the process there is a heat transfer of 269j from
What mass can the balloon lift at sea level, where the density of air is 1.22 kg m-3. What would be the payload if He were used instead of H2
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