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A mixture of CdS and CoS is present in a sample the amount of CdS was determined by reacting 8.767 grams of the sample with an excess of hydrochloric acid HCl to release Hydrogen sulfide H2S from each compound; CoS(s) + 2 HCl(aq) = CoCl2 + H2S(g), CdS(s) + 2 HCl(aq) =CdCl2 + H2S(g) If the sample reacted completely and produced 1931 mL of H2S hydrogen sulfide at 29.82 °C and 759.7 mm Hg, determine the mass percentage of Cadmium sulfide in the mixture?
Write down the balanced chemical equation when Fe 3 O 4 reacted with carbon monoxide and calculate mass of carbon dioxide that will be produced in this reaction if 234 g carbon monoxide is reacted with excess Fe 3 O 4 ?
A solution is prepared from 0.95 grams of H3PO4 ,(Phosphoric acid) and 1.15 grams of HClO4 (perchloric acid) in 150 mili litres of solution then determine how many milliliters of 0.425 M sodium hydroxide( NaOH) is needed.
Compute w when 181 grams of iron (III) oxide (MM = 159.7 g/mol) combines with excess carbon(C)) to produce carbon dioxide(CO 2 ) gas at 359 K: express your answer in kilo joules
Gas stoichiometry and Percentage of calcium carbonate in the sample
A multiple stage evaporate process concentrates a weak solution of LiOH from 4.48 wt% to 26.78wt%. This evaporator processes 10 metric tonnes of solution each day.
A 10.00 ml sample of 0.254 M H2SO4 is titrated with 0.385 M NaOH. What volume of the NaOH solution, in mL, is required?
Why is toxicity diminished in other congeners where chlorines are removed from the 2,3,7,8 positions, or when chlorines are added to remaining positions on the rings?
Find the intrinsic conductivity for germanium. (Assuming ni = 2.5x 1019/m3 at room temperature.)
A commercial plant is to treat 320 m3/hr of feed consisting of 50 % A, 50% inerts at 25 atm and 350ºC to obtain eighty percent conversion. Determine how many 2-m lengths of 2.5 cm ID pipe are required?
Analysis of corrosion mechanisms and preventative measures
Explain the structure for 4-ethyl-2,3-dimethyl-2-heptene?
Calcium carbonate and sand mixture with weight of 4 grams is reacted with excees of HCl results in the production of carbon dioxide then find out the percent of calcium carbonate in the original mixture?
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