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For a 0.25M solution of HF: a) Write the ionization equation, b) What will be the concentration of all species present, excluding water, when the reaction is at equilibrium?, c) What will be the pH?, d) what will be the percent ionization?
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO
If you want to remove 50% of the moisture in the air at a constant pressure of 100 kPa, to what temperature should you cool the air.
A sample mixture of CH4 and C2H6 weighing 0.732 g burned to give 2.064 g CO2. What is the mass of CH4 in the mixture.
Determine how many grams of solute would separate if the quantity of the solvent is 129 grams if a saturated solution of ammonium nitrate at 75 °C is cooled to fifteen degree Celsius?
A solution is made by dissolving 25g of NaCl in enough water to make 1.00 L of solution. Assume that the density of the solution is 1.00 g/cm3. Calculate the mass percent, molarity, molality, and mole fraction of NaCl
Solid iron reacts with liquid water to produce solid iron(III) oxide and hydrogen gas. Balance the redox reaction. What is the oxidizing agent in the redox reaction and what is the total number of electrons transferred in the reaction?
What is the enthalpy change when 1 mole of ammonia gas is decomposed into its elements?
Draw all of the eclipsed and staggered conformations for the c3-c4 bond in hexane starting with the conformation that has the lowest energy.
The percentage of an additive of gasoline was measured six times with the following results: 0.13, 0.12, 0.16, 0.17, 0.20, 0.11%. Find the 90% confidence level interval
Explain what health risks may arise people use this hot water in the preparation and cooking and what is the equilibrium constant for this reaction
What is the order of the reaction if it takes 10 minutes, 20 minutes, 30 minutes to reach 75% conversion?
calculate the final pressure and the number of moles of H2 in each flask
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