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A. Shielding and effective nuclear charge are two very important conceptsa. Briefly explain these two concepts
B. Use these two concepts to explain one of the following: atomic radii trends, ionic radii trends, or ionization energy trends.
Calculate the percent ionization of formic acid (HCO2H) in a solution that is 0.311 M in formic acid and 0.189 M in sodium formate (NaHCO2). The Ka of formic acid is 1.77 × 10-4.
1.compare and contrast covalentionic and hydrogen bonds.2. what information can you gather from the periodic table.3.
write out a balanced reaction of methyl salicylate with 2.0 M sodium hydroxide solution to yield, upon work-up with 6.0 M hydrochloric acid, salicylic acid and methanol 2) provide the complete mechanism for the above reaction
Write the net ionic equation for the reaction that occurs when an aqueous solution of hydrochloric acid reacts with an aqueous solution of ammonia. please find delta H also. Or at least give me the state at which each element is in.
the air in an inflated balloon defined as the system is warmed over a toaster and absorbs 115 j of heat. as it expands
5.0 kg of hydrogen is reacted with 31 kg of oxygen. The experiment yields 28 kg of water. Calculate the percent yield of the reaction.
A reaction is first order overall. For a given sample, its initial rate is 0.0200 mol L-1 s-1 and 25.0 days later its rate dropped to 6.25 x 10-4 mol L-1 s-1.
Find the molar mass of a gas using the combined gas law if 950. mL of the gas collected over water at 750.0 mm Hg and 21.oC has a mass of 0.905 g
Orono Corp.'s sales last year were $400,000, its operating costs were $362,500, and its interest charges were $12,500. What was the firm's times interest earned
Which of the following substances would be most efficient per unit mass at melting snow from sidewalks and roads: glucose, sodium chloride, ethylene glycol, or calcium nitrate. Your explanation should include possible environmental impact.
Problem- Ethyl acetate reacts with H2 in the presence of a catalyst to yield ethyl alcohol- C4 H8O2(l) +H2(g)-------> C2H6O6(l) Part a) Write a balanced equation for the reaction.
Calculate the number or calories of heat energy required for warming 34.6g of water from 18.9 celsius to 29.9 celsius
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