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60g of solid Zn are added to 50mL of a 0.15M solution of HCl and undergo a chemical reaction according to the following equation: Zn(s) + 2 HCl(aq) ? ZnCl2(aq) + H2(g) a) How many grams of ZnCl2 can be produced from this reaction? b) How would you classify this reaction? As acid/base, oxidation/reduction or precipitation? c) Assuming that all the H2 that is produced in the reaction is taken to a different container, how much volume would it occupy under STP conditions? d) If the produced H2 is later mixed with 50g of F2 in balloon. What would be the partial pressure of F2 is the balloon is under 3atm of pressure? e) Pretend that the HCl of this reaction is used in the neutralization of 45mL of a solution of Ga(OH) 3. What was the molarity of the Ga(OH)3 solution?
30.0 mL of 0.100-M formic acid (Ka = 1.80×10-4) is titrated with 0.100-M NaOH. What is the initial pH of the formic acid solution? What is the pH of the solution after 12.0 mL NaOH has been added?
While in Europe, if you drive 117km per day, how much money would you spend on gas in one week if gas costs 1.10 per liter and your car's gas mileage is 41.0km/L ?
Describe the use of light absorbing reagents in amino acid chromatography. What are these reagents used for? Name two reagents that are commonly used and describe how they react with amino acids.
Which components of an acrylamide gel effects qualities of the final product, and which components affect the speed of polymerization?
A fossil fuel containing 84% C, 15% H and 1%S is burned with 20% excess air in a boiler. The stack gases are at 150 C. a) What is the concentration (ppm) of SO3 in the stack if equilibrium is established according to
If the concentration of NO2 is .00556 M at the beginning of the reaction, what will [No2] be after 300 secondd? NO2 (g) arrow NO (g) + O (g)
The temperature increased by 10.08 oC. Use these data, plus the information given below for CO2 and H2O, to estimate the standard enthalpy of formation, of H, at 25 oC for this compound of H values at 25 oC for CO2(g) and H2O(l) are 394 kJ mol 1 a..
effuses through a hole in a plate in the same amount of time it takes 20.54 mL of another gas to effuse through the same hole under the same temperature and pressure conditions. Determine the molar mass of the unknown gas.
The relationship between Kp and Kc for gaseous reactions depends on the change in the total moles of gas between reactants and products. For each of the equations given at the right, select the correct relationship between Kp and Kc from the list ..
The combustion of 53.4 g of butane (c4h10) produces 95.6 g of co2. what is the percent yield of the reaction
draw a representation for TPCP that would represent its structure if the phenyls were perpendicular to the 5-membered ring (a paddle-wheel structure) and a representation that represents the propeller structure.
Nickel is a transition element and has a variable valence.Using a nickel salt, 2 F (faradays) plate out 39.2 g ofnickel. What ions are in the solution of this salt? Atomic molar masss Ni = 58.7 g·mol-1
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