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A) Calculate the reaction quotient Qsp for the salt MX in a solution prepared by mixing 25.0 mL of a 2.10E-8M solution of the cation and 25.0 mL of a 3.00E-7M solution of the anion. Enter your answer in scientific notation with two decimal places.
B) If the value of the solubility product constant Ksp for the salt described in the previous question is 4.40E-16, will the salt precipitate? Yes or No and why
The mole fraction of gas A in a mixture is 0.48. If the total pressure of the container is 2.0 atm, what is the partial pressure of gas A?
If there are 0.640 g of NaCl left in a beaker that originally contained 75.0 mL of saltwater, what must have been the molar concentration of the original solution? The molar mass of NaCl is 58.44 g/mol.
The reactant concentration in a first-order reaction was 6.70×10-2 after 25.0 and 3.30×10-3 after 100 . What is the rate constant for this reaction?
Oxalic acid, H2C2O4 has acid dissociation constants Ka1 = 5.9 x 102 and Ka2 = 6.4 x 105. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H2SO3.
An aerosol spray can with a volume of 456 mL contains 3.09 g of propane gas (C3H8) as a propellant. If the can is at 23°C, what is the pressure in the can? What volume would the propane occupy at STP?
Determine molar mass for this compound and oxidation state of lead in it. write the oxide formula of lead for the corresponding oxidation state
The activation energy for the formation of HCl from its elements: H2 (g) + Cl2 (g) → 2 HCl(g) is 155 kJ mol-1. How much faster will this reaction occur at 200°C versus at 100°C?
Calculate the pH of a 100 ml solution containing 1.00 g of imidazole (FM 68.08) and 1.00 g imidazole hydrochloride (FM 104.54). pKa of imidazole is 6.993. How many ml of 1.07 M HClO4 should be added to 1.00 g of imidazole to give a pH of 6.993
why must the Meltemp apparatus cool dwon to around 40 C between measurments? 5)why you expect ionic solids to have higher melting point than molecular solids?
Consider an electron moving from left to right (toward positive x) in a constant potential of V = 2.0 eV with total energy, E = 5.0 eV. Let the electron be described as a free particle such that the constant potential DOES NOT depend on the spatia..
How many significant figures are contained in each of the following numbers? a) 0.9463 b) 0.08206 c) 6.0255 x 10^23 d) 1.0 x 10^-12 e) 1010
calculate the molarity of a solution of glycerol made by dissolving 46.000 ml glycerol at 15 circ rm c in enough water
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