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What volume of hydrogen gas is produced when 0.829 mol of iron reacts completely according to the following reaction at 0oC and 1 atm?
iron (s) + hydrochloric acid (aq) iron(II) chloride (aq) + hydrogen (g)
Estimate the approximate concentration of a typical enzyme and the number of the enzyme molecules inside each cell. Make any reasonable assumption that will help you calculate the numbers
At equilibrium, it is found that .25 moles of COCl2 remain. What is the equilibrium concentration of CO?
when 9.8 g of aluminum oxide (Al2O3) decomposes, how many grams of aluminum metal are produced?
M.r eric castilo purchased alot for PH 1300000 and sold them 2 years later for PH1900000. At what rate did his money earn?
It gave a mixture of MgO and ZnO that had a mass of 1.409g. What mass of An was there in the original mixture?
What happens if student forgets to rinse the buret with a small portion of EDTA solution. (Buret contains water droplets from washing.) If this incorrect concentration of EDTAis used to calculate the ppm CaCO3
If a sodium hydroxide solution is prepared by dissolving it in a volumetric flask and diluting to the line with mixing, will the level be on the line, below the line, or above the line on the following day?
A bottle containing 345 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
In what order would the amino acids arginine, leucine, and lysine be eluted from a Dowex-1 column at pH 10.5? (b) In what order would glutamic acid
What is the iron molar concentration in the serum sample? Not that the following relationship may be used: Aunk/Aunk+std - Cunk/{Cunk+Cstd}
If a reaction mixture initially contains 0.159 M SO2Cl2 , what is the equilibrium concentration of Cl2 at 227 C?
Assume that the liquid is an ideal solution and apply Raoult's law to find the following. What is the temperature of the liquid
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