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Q1: What is the pH of a 0.20 mol/L solution of hydrocyanic acid? Q2:
Q2: The pH of an acid solution is 2.77. The concentration of the acid is 0.25 mol/L. What is the Ka of the acid?Q3:
Q3: What is the Kb of the cyanide ion (answer to 2 S.D)?
Q4: What is the pH of a 0.50 mol/L solution of sodium cyanide?
Q5: The pH of a 0.40 mol/L solution of a weak base is 8.76. What is the Kb of the base?
Q6: 1.5 g of sodium ethanoate is dissolved to make 300 mL of solution. What is the pH of the solution?
Silicon is the fundamental component of integrated circuits. Si has the same structure as diamond. Is Si a molecular metallic, ionic, or covalent-network solid?
What is the molality of 150.0 g of NH3 dissolved in a solution that is 1.25 Liters? The density of the solution is 1.45 g/mL.
When Lead (2) Nitrate reacts with sodium iodide, sodium nitrate and lead (2) iodide are formed. if i start with 25.2 grams of lead (2) nitrate and 15.0 grams of sodium iodide, how many grams of sodium nitrate can be formed?
A gas has a volume of 2.84 L at 1.00 atm and 0oC. At what temperature does it have a volume of 7.50 L at 520 mmHg
what compound was condensed in an adol reaction to produce (2E)-5-methyl-2-(1-methylbutyl)oct-2-enal
When 200 ml of an aqueous benzoic acid solution were extracted with 30 ml of ethyl acetate, 45% of the benzoic acid were extracted. Calculate the partition coefficient of benzoic acid
liquid helium at 4.2 k has a density of 0.147 gml. suppose that a 1.00-l metal bottle that contains air at 105k and 3.0
What unusual aspect of water is responsible for it unique characteristics as both a liquid and as a solid? Give examples of how this property of water would affect food systems during processing.
Calculate the pH at the equivalence point for the titration of 0.200 M methylamine (CH3NH2) with 0.200 M HCl.
If acid rain causes the pH of a lake to decrese by 0.010, the [H+] concentration that lake will increase by
Calculate the pH of each of the following solutions ( Ka and Kb values are given in Appendix D in the textbook). 0.115 M hydrogen chromate ion (HCrO4^-).
design a molecule with three chiral centers and draw eight possible stereoisomers of the molecule.
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