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(1)- 15.0 mL of 0.400 M Hno3 Solution is titrated with 0.600 M KOH solution . Calculate pH of the solution when12.0 mL of KOH is added ?
(2)- 20.0 mL of 0.25 M of HC2H3O2 is titrated with 0.40 M Naoh, Calculate the pH of the solution after 15 mL NaOH is added. Ka(Hc2H3O2)=1.8x10^-5
Determine the point group of each of the three possible geometries of the hypothetical Be3+ on, ten draw the molecular orbitals for each geometry,
An auto mechanic spills 87 mL of 2.6 M H2SO4 solution from a rebuilt auto battery. How many milliliters of 2.6 M NaHCO3 must be poured on the spill to react completely with the sulfuric acid.
Which of the following molecules are polar? (There may be more than one; choose ALL the polar molecules for full credit)
A steel tank has a volume of 438 liters and is filled with 0.885 kg of Oxygen. Calculate the pressure of oxygen at 21 degrees Celsius.
A solution is prepared by dissolving 14.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 11.50 mL sample of this stock solution is added to 55.00 mL of water.
Consider a glass of 262 mL of water at 28°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved.
A buffer containing 0.4316M of acid, HA, and 0.1549M of its conjugate base, A- has a pH of 2.20. What is the pH after 0.0019 mol NaOH
If the reaction of 2.50 g of aluminum with 2.50 g of oxygen produced 3.50 g of aluminum oxide, What is the % yield of the reaction?
How many milliliters of boiling water are required to dissolve 24 g of N-Bromosuccinimide? If the solution were cooled to 25° C, how many grams of N-Bromosuccinimide would crystallize out.
Find concentration of each ion present in the solution formed by mixing: 44.0 mL of 0.150M Na2SO4 and 25.0 mL of 0.200M KCl.
Describe Newman projection. Experiments have shown that for 1,2-dichloroethane, ClCH2CH2Cl, in carbon tetrachloride solution at 25C, 70% of the molecules are in the anti and 30% are in the gauche conformation
a) when 34.0g of NH3 reacts with 96.0g of O2 what is the partial pressure of NO in the sealed container?
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