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Determine the mass of sodium formate that must be dissolved in 450.0cm3 of a 1.2M solution of formic acid to get a buffer solution with pH = 3.70.
lucite is 71.4 carbon 9.59 hydrogen and 19.01 oxygen. what is the empirical formula for lucite?c5h8oc89ho31c7ho2the
Consider the titration of a 23.0 mL sample of 0.110M HC2H3O2 with 0.130M NaOH. Determine the pH at 6.00 mL of added base.
Explain all assumptions made and compare the conformatioanl flexibility/ diversity of PDMB with that of PE, as well as indicate the most likely regular repeating conformation for each polymer and which one have the larger and why
CO(g)+2H2(g)->CH3OH(g) How many moles of each reactant are needed to produce 3.60 X 10^2g of CH3OH?
A weak acid, HA, has a Ka value of 3.86 x 10-9. What is the Kb of A-. Use E notation and 3 significant figures.
What is the percent-yield of H2 in the reaction below when an equimolar mixture of CH4 and CO2 with an initial total pressure of 20.0 atm reaches equilibrium at 1200. K, at which Kp = 3.548 x 106
An unknown solution forms a white precipitate when treated with 6 M HCl. The precipitate is incompletely soluble in hot water but dissolves completely in NH3
At 4.00 L, an expandable vessel contains 0.864 mol of oxygen gas. How many liters of oxygen gas must be added at constant temperature and pressure
a chemist burns 160 g of aluminum in oxygen to produce aluminum oxide. she produces 260 g of aluminum oxide. write a
What is the hydronium-ion concentration of a solution formed by combining 700. mL of 0.19 M HCl with 300. mL of 0.52 M NaOH at 25ºC
the molar heat capacities of iron and gold are 25.19J/(mol*degrees celsius) and 25.41 J/(mol*degrees celsius), respectively. what is the final temperature of the water and pieces of metal?
aluminumnbspnbspreacts with chlorine gas to form aluminum chloride via the following reaction2als3cl2ggt2alcl3syou are
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