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Calculate the pH of a solution that is 0.295 M in sodium formate (NaHCO2) and 0.205 M in formic acid (HCO2H). the Ka of formic acid is 1.77x10^-4.
determine the amount of food you must consume to reach an ld50 exposure when the concentration of red dye 40 in the
A 1.733 g sample of a metal reacts with hydrochloric acid to form a MCl2 type of salt and 380.0 mL of H2 at 20 degrees C and 720 torr pressure. a) Write a balanced net ionic equation for this reaction b) Determine identity of the metal.
Upon reaction with excess sulfamic acid, HSO3NH2, a 0.121g sample of a mixture of sodium nitrite, NaNO2, and sodium chloride, NaCl, produced 28.3 mL of nitrogen gas collected over water at 25.3 degrees Celsius and at a barometric pressure of 738 m..
The student did not pre-heat the gravity filtration apparatus in Part 3. c) The student forgot to cool 5 mL of solvent in Part 5 and washed the crystals with room-temperature solvent.
Determine how many grams of carbon dioxide will be present in the equilibrium mixture? Considering the given equations CO(g) + H 2 O(g) CO 2 (g) + H 2 (g) if it is given =K c = 23.2
A sample of chlorine gas is confined in a 2.08-L container at 338 torr and 50.0 degrees C. how many moles of gas are in the sample
if 150g of water is collected during complete combustion of 166g of butane with ocyben, calculate the percent yield of water.
what is the partial pressure of argon? If the two flasksare connected through a stopcock and the stopcock is opened, whatis the total pressure?
At a particular temperature the equilibrium constant for the reaction: H2(g) + F2(g) ? 2HF(g) is K = 36.0. A reaction mixture in a 10.00-L flask contains 0.42 moles each of hydrogen and fluorine gases plus 0.15 moles of HF.
The specific heat of an unknown metal is found to be 0.233 J/K g. The Law of Dulong and Petit predicts a molar heat capacity of 26 J/K mol. Use this law to estimate the molar mass of the metal.
Calculate the molar flow rate (mol/h) of the feed gas and themole fraction of water vapor in the product gas.
calculate the equilibrium partial pressures of CO2 and CO.
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