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If it takes 20nL of an1.2M solution of iodine to titrate 15mL of an ascorbic acid solution calculate the molarity of the ascorbic acid solution
What is the concentration (M) of CH3OH in a solution prepared by dissolving 16.8 g of CH3OH in sufficient water to give exactly 230 mL of solution?
how many N2 molecules can be produced after the explosion of 2.37 kg of NH4NO3? (Molar mass of NH4NO3 is 80.06 g/mol.)
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
Explain why two layers formed when 3 M NaOH was added to the ether solution after the initial separation. What solvents do the two layers represent? Which solvent forms the upper layer? Why?
A solution of dimethylamine/dimethylammonium buffer contains 0.246 M (CH3)2NH and 2.09 M (CH3)2NH2Cl. Calculate the pH of the solution. Round your answer to 3 significant digits. Kb= 5.1x10^-4 (CH3)2NH(aq) + H2O(l) = (CH3)2NH2+(aq) + OH-(aq)
What is the minimum mass of each reactant necessary to produce 200 g of sulfuric acid in nthe following reaction?
15.0mL of 0.50 HCl is added to a 100.0mL sample of 0.200 M HNO2. What is the equilibrium concentration of NO2. ions. (Ka for HNO2= 4.0 x 10^-4)
Calculate the energy in joules and calories required to heat 40.0 silver (Ag) from 112 C to 270 C
How many grams of (NH4)2SO4 should be present to prevent precipitation of Mg(OH)2 (s). The Ksp of Mg(OH)2 is 1.8x10^-11.
aluminum has the mass of 8.37g. when it is placed in a graduated cylinder containing 20.0mL of water, the water level rose 23.1mL. calculate the density and specific gravitas of the object.
The synthesis of enzymes in response to changing metabolic needs is referred to as
What is the equilibrium constant, K, of the following reaction given the following equilibrium conditions
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