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Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq). How much MnO2(s) should be added to excess HCl(aq) to obtain 325 mL of Cl2(g) at 25 °C and 725 Torr?
What is the mole fraction of solute and the molal concentration for an aqueous solution
Consider the reaction 2ZnS + 3O2 → 2ZnO + 2SO2. Suppose that you wanted enough O2 to completely react with 500. g of ZnS.
A 2.18-L flask is filled with propane gas (C3H8), at 1.00 atm and -16.0°C. What is the mass of the propane in the flask?
Calculate the rate of water removal from the condenser, the rate of dehumidified (1.50% water) air delivered to the house, and the flow rate and composition of the humid air entering the condenser
An unknown compound has a forula of CxHyOz. You burn 0.1523 g of the compound and isolate 0.3718 g of CO2, and 0.1522 g of H2O. What is the empirical formula of the compound?
Find the pH of a 0.130 M solution of a weak monoprotic acid with a Ka value of 1.6 *10(to the power of -6)
Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.070 mol lysine (HL), 0.055 mol aspartic acid (H2A), and 0.0080 mol NaOH. Consider just acid-base chemistry.
A tank initially at a pressure of 6.70 atm contains 2.0 moles of oxygen gas at 25.0 degrees celsius. Its temperature is then increased to 45.0 degrees celsius
Determine how many grams of oxygen gas would be needed to combine exactly with 13.2 kg of propane (C3H8) gas (the 3 and the 8 are subscripts).
what is the name of the glassware to which the separatory funnel, boiling flask, and still head was attached during distillation?
The initial mass of a radioisotope is 10.0g. If the radioisotope has a half-life of 2.75 years, how much remains after four half-lives?
Balance the equation for the reaction of sodium metal with water to produce aque- ous sodium hydroxide and hydrogen gas carbon. The products of this reaction are tin and carbon dioxide. When the equation is written and balanced, what is the coeffi..
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