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Addition of 51.5 mL of 2.238 m of H2SO4 (solution density=1.1243 g/mL) to 51.5 mL of 2.238 M BaCl2 gives a white precipitate.
What is the mass of the precipitate in grams?
The following reaction is first order with respect to NO and first order with respect to O2, and the rate constant is 5.0 x 104 M-1s-1
the compound kb5o8middotx h2o was analyzed and found to contain 24.6 of water. if the formula weight of this compound
Calculate the volume of a balloon at the final temperature if this balloon at temperature of 279K and an initial volume of 2.3L is warmed to 406K.
consider a hydrogen atom in its ground state. what is the energy of its electron? consider the hydrogen atom in an
Ignoring activities, determine the molar solubility of copper (I) azide (CuN3) in a solution with a pH of 13.11. Ksp (CuN3) = 4.9 × 10-9; Ka (HN3) = 2.2 × 10-5.
If a system has 2.50 × 102 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its surroundings, what is the change in internal energy of the system
An aqueous solution is 5.80% methanol by mass with d=0.988g/ml. What is the molarity of methanol in this solution
How much heat is released when 4.50 g of methane gas is burned in a constant-pressure system? CH4 (g) + 2O2(g) -> CO2 (g) + 2H2O(l) H=-890kJ
Determine the ΔH solution for this compound If the heat of solvation for this compound = -30.8 kJ/mol , crystal lattice energy = -62.2 kJ/mol.
Write a dissolution for each precipitate that is soluble in CH3COOH: Na2C2O4, Pb(NO3)2, Al2(SO4)3, NaCl, NaOH
What is the free-energy cost of pumping Ca2+ out of a cell when the cytoplasmic concentration is 0.4 micromolar, and the extracellular concentration is 1.5 micromolar
Suggest one plausible reason for a % mass of water that is lower/higher than the true value
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