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Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following equation: Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) The product gas, H2, is collected over water at a temperature of 25 C and a pressure of 755 mm Hg. If the wet H2 gas formed occupies a volume of 9.94 L, what is the number of mols of Zn reacted? The vapor pressure of water is 23.8 mm Hg at 25 oC.
In analyzing a general unknown containing ions from several of the cation groups, a student treated the decante from Group II with Na3Co(NO2)6 and observed that a precipitat
A 12 kg block of ice has a temperature of -10.0 degrees celsius. The pressure is one atmosphere. The block absorbs 4.50 times 10 to the sixth power J of heat. What is the fi
Your task is to replicate the Crystal structure of H10-2-G3. It is not just a matter of making a cartoon and highlighting side chains. Some of the atoms in the side chains a
Chemists studied the formation of phosgene by sealing 1.00 atm of carbon monoxide and 1.06 atm of chlorine in a reactor at a certain temperature. The pressure dropped smooth
If the measured gas pressure in a collection flask during a gas-forming reaction was determined to be 1.44 atm, and the atmospheric pressure that day was measured as 0.95 at
A 135.0 L weather balloon filled with 4.9 moles of helium has a small leak. If the helium leaks at a rate of exactly 10mmol/hr what is the volume of the balloon after 72 hou
Calcium hydrogen phosphate is a component of plant fertilizers (a source of phosphate). It is a relatively insoluble hydrated ionic compound, CaHPO4·2H2O, with a Ksp of 2.7×
A gas-phase decomposition is first order with respect to the reactant, R. If the initial concentration of R is 1.0E-4 mol L-1 and the rate constant k=1.08E-6 s-1, what conce
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