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A sample contained a mixture of ZnS and HgS. The amount of ZnS was determined by reacting 11.06 g of the sample with an excess of HCl to release H2S from each compound; ZnS(s) + 2 HCl(aq) ® ZnCl2 + H2S(g) HgS(s) + 2 HCl(aq) ® HgCl2 + H2S(g) If the sample reacted completely and produced 2143 mL of hydrogen sulfide at 29.06 °C and 699.2 mm Hg, what was the mass percentage of ZnS in the mixture?
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 8.0 x 10^-2 M NaOH.
The decomposition of NO2 (shown below) has a KP = 4.8 × 10-6 at a certain temperature. If 1.36 atm of NO2 is placed in a flask at this temperature
Using the arhennius equation to plot ln(equilibrium constant) vs. 1/Temperature, how can we determine the enthalpy of reaction
How many atomsof carbon are present in 34.5 grams of caffeine?
a 24.6 ml volume of hcl solution reacts completely with a solid sample of magnesium carbonate producing 183 ml of
if 860 liters of neon at 45°C and 800 mm. are decreased to 700 liters at the same pressure, what is the new temperature of this gas?
Consider the combustion of ethane 2C2H6 + 7O2 yields 4CO2 + 6H2O If the ethane is burning at the rate of 0.1 mol/L*s, at what rates are CO2 and H2O being produced?
For the titration of 87.95 mL of 0.1311 M NaOH with 1.2586 M HBr, find the pH of the solution within the receiving flask when 7.87 mL of HBr is added.
An individual suffering from a high cholesterol level in her blood has 241 mg of cholesterol per 100 { mL} of blood. If the total blood volume of the individual is 5.1 L, how many grams of total blood cholesterol does the individual's body contain..
the mixture of saltwater and ice around the ice cream bucket in the ice cream machine is at a temperature of -8.40c.
If the gas composition is 65% methane (CH4) by volume and 35% carbon dioxide (CO2) by volume, what mass, in kg, of each compound would be held within the container just at the release pressure
NH4ClO4 ignites and burns in the absence of any other material to produce N2, HCl, H2O and O2. Write the balanced chemical equation for this process and determine the mass of H2O produced.
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