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Initially a mixture contains 0.601 mol each of N2 and O2 in an 7.65-L vessel. Find the composition of the mixture when equilibrium is reached at 3900°C. For the reaction below, the Kc = 0.0123 at 3900°C.N2(g) + O2(g) 2 NO(g)
NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
Write the mass balances for K+ and the phosphate species in a soln prepared by mixing .025mol KH2PO4 plus
You can get sunburn on a cloudy day, but you can't get sunburn even on a sunny day behind glass. Explain.
How many ml of 2.00M H2SO4 are required to neutralize 50.0mL of 1.00M KOH?
What is the freezing point of the solution. Melting point (CCl4): -22.92 C Melting point (C6H6): 5.5 C K(CCl4): 2.65 C/m K(C6h6): 3.92 C/m
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.031 M in NaClO
A 100. mL sample of 0.200 M aqueous hydrochloric acid is added to 100. mL of 0.200 M aqueous ammonia in a calorimeter whose heat capacity (excluding any water) is 480. J/K. The following reaction occurs when the two solutions are mixed.
if 24.6 grams of lithium react with excess water how many liters of hydrogen gas can be produced at 301 kelvin and 1.01
Use the distance between the charges (the spring length) BEFORE contraction to get the spring force (using coulomb's law) and divide that by the distance that it contracted to get the spring constant OR
Calculate the work of expansion accompanying the complete combustion of 1.0g of glucose to carbon dioxide and (a) liquid water, (b) water vapour at 20 degrees Celsius when the external pressure is 1 atm
when a .28 gram sample of limestone was decomposed by heating 75 millileters of CO2 at 750 mm Hg and 20 degrees celcius were evolved. How many grams of CO2 were produced?
A chemist needs to determine the concentration of a solution of nitric acid HNO3, She puts 865mL of the acid in a flask along with a few drops of indicator. She then slowly adds 0.600M Ba(OH)2 to the flask until the solution turns pink, indicating..
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