Use the References to access important values if needed for this question. The hydroxide ion concentration, [OH'], of an aqueous solution of 0.397 M ethylamine (a weak base with the formula C,H&NH,) , K, = 4.3×10, is: [OH"] = | М.

Given the following information: acetylsalicylic acid (aspirin) hydrocyanic acid (2) At equilibrium the HC₂H704 HCN Submit Answer (1) Write the net ionic equation for the reaction that occurs when equal volumes of 0.536 M aqueous acetylsalicylic acid (aspirin) and sodium cyanide are mixed. It is not necessary to include states such as (aq) or (s). (3) The pH of the resulting solution will be will be favored. = Try Another Version Ka = 3.0x10-4 Ka = 4.0x10 10 seven. + 2 item attempts remaining

Complete the following neutralization reaction between an acid and a base. Do not incluc not write coefficients of "1." x x, He Н, СО, + 2 КОН > 2H,0+K,CO3

what is the Co^2+ concentration in the solution when the maximum amount of Co(OH)2 has dissolved, if it's Ksp is 1.2x10^-15 and has a molar mass of 92.95g/mol. use correct units and sig figs.

Suppose you are given three bottles, labeled A, B, & C; each contains an aqueous solution. You are told that the possible solutions are: sodium hydroxide, nickel(II) chloride, potassium thiocyanate, sodium acetate, and pure water. Only one type of solution is present in each bottle and the con 0.5 M unless otherwise noted. Several tests are performed, and the results are summarized in the flow chart displayed on the right. Based on these results, assign the contents of the bottles and write a brief justification for each assignment. (The type of pH paper you will use is the same as the one described in the chemical foundations section).

the References to access importan values it needed for this questi The hydronium ion concentration of an aqueous solution of 0.481 M acetylsalicylic acid (aspirin), HC,H7O4, (K₂ = 3.00×10-4) is [H3O+] = M.

7. Distinguish between the solute and solvent in each of the following solutions: (a) saltwater (NaCkaq)l: (b) sterling silver (92.5% Ag, 7.5% Cu); (c) air (about 80% N,, 20% O,). On what do you base your distinctions? Sterling silver is an aloy of 92.5% silver and 7.5% another metal, usually copper. Yuny Maksymemke Shutterstock.com

Complete and valance the following neutralization reactions. Express your answer as a chemical Equation identify all the phases in your answer. A. HNO3(aq)+Ca(OH)2(aq)-->   B.H2CO3(aq)+Ba(OH)2(aq)-->

Solid potassium chromate is slowly added to 125 mL of a 0.440 M barium nitrite solution until the concentration of chromate ion is 0.0127 M. The percent of barium ion remaining in solution is   %?

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