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Suppose a sample of Zn(s) is reacted with HCl(aq) to form hydrogen gas. Explain the H2 gas bubbles out of aqueous solution and is collected in a 552.0mL container at 618.3 Torr and 25 C. Explain how many grams of zinc reacted? Be sure to account for the vapor pressure of water in the collected gas sample.
how can we calculate the weight of CaCO3 per 10^6 ml unknown sample.the weight of CaCO3 per 25 ml of unknown sample is 5.71*10^-3
A solution of ethanol, C2H5OH, has a concentration of 2.36 M. What is the concentration of this solution in (a) mass % of ethanol, (b) molality of ethanol?Densities: d(ethanol) = 0.78 g/mL; d(water) = 1.0g/mL; d(solution) = 0.968 g/mL.
Calculate the Ka for the acid. The initial concentration of the acid is 0.010m?
The mass spec of a yellow, diamagnetic solid A, a neutral metal carbonyl, reveals a molecular ion peak of 390 amu. A fragmentation pattern consisting of sequential losses of 28 amu (CO) occured until m/z = 110 amu.
Using the same assumptions and approximations you used in lab, determine the molar enthalpy change (in kJ/mol) for the reaction below, assuming that CH3CO2H dissociates completely in water.
A buffer is prepared by adding 25.0 mL of 0.12 M HCl(aq) to 55.0 mL NaCH3CO2(aq). What is the solubility of BaF2 in this buffer solution
Correct the second part of each of the following names. (Type your answer using the format copper(II) chloride for CuCl2, and CO2 for CO2.) (a) N2O4 is tetraoxygen dinitride.
average kinetic energy of 6410 J/mol under certain conditions, what is the root mean square speed of Cl2(g) molecules under the same conditions?
Cycloprpane decomposes in a first-order reaction at 500 C If the cyclopropane concentration is .670 M at the start of the reaction and is .367 M after 900 s, what is the rate constant for the reaction
New ads for the toyota Prius claim that it has saved over 1 billion gallons (2.8 x 10^9kg) of gasoline. Assuming that gasoline is 100% octane (C8H18) how much has the prius reduced emissions of carbon dioxide.
A sports beverage company is seeking an energy supplement to increase the performance of the athletes. An ongoing research project suggest the use of a tetrasaccharide with the following characteristics
A bicycle tire is filled with air to a pressure of 75. psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius. The volume of the tire increases by 4.0%. What ..
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