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Q6.1 2 Points What is the pH of the following solution? [H'] = 1.25x10-3M pH =...
Q6.1 6 Points It is possible for a 6th degree polynomial to have no real zeros. O True O False Enter your answer here Q6.2 6 Points an flod The function f(3) = x(x-2) (2+3)(x-1)" has a hole at x = 2. O True O False Enter your answer here
M Please select file(s) Select file(s) Q5.2 15 Points A 50.0 mL HBr (aq) solution is titrated with 25.78 mL of 0.110 M NaOH. What is the pH of the original solution? Show your work for full credit. How many mol of HBr are present in the sample solution? Enter your answer here mol HBr are present What is the pH of the original 50.0 mL of HBr solution? Enter your answer here pH Please select file(s) Select file(s) Q6...
6.What is the pH of a solution with [OH-] = 1.7 x 10-3M? 7.Calculate [H3O+] of a solution with a pH of 5.5 8. A 15.0 mL sample of H2SO4solution is titrated with 24.0 mL of 0.245 M NaOH solution. What is the molarity of the H2SO4solution?H2SO4(aq) + 2 NaOH (aq) →2 H2O (l) + Na2SO4(aq)
S> Question 7 (2 points) What is the pH of a 0.174 M aqueous solution of hydroxylamine, HONH2? The Ky for methylamine is 1.1x10-8. You do not need to solve the quadric equation for this problem. Express your answer to two decimal places. Your Answer: Answer
Calwlate the ph of the solution [H+] = lo 1 x 10-3M [1++] = 6.0 x10-"M
Problem 4 (8 points). What is the pH of a 0.890 M NH (aq) solution at room temperature? The base ionization constant of ammonia is Ko = 1.78 10. Round off your answer to 2 decimal places and enter your answer in the box provided with correct units and sig. figs.: The pH of Answer: . He 0.890 M ammonia is): pH =
Consider the following reaction at 298 K: 3Cu2+(aq) + 2Al(s) + 3Cu(s) + 2 A13+ (aq) and the standard reduction potential values: Cu2+(aq) + 2e + Cu(3) E° = +0.342 v Al3+ (aq) + 3e + Al(s) E° = -1.662 v No files uploaded (Submit 6.1 and 6.2 as a single file) Q6.1 8 Points Calculate the standard Gibbs energy of reaction (A,G), in kJ/mol. Q6.2 8 Points Calculate the emf (E) when [Cu2+] = 1.0 x 10-2 M and...
What is the pH of B+H if: B is 50mL of .3M HC2H3O2 H is 100mL of .2 NH3
1a. Calculate the pH of a 3.95 × 10−3M HNO3 solution. Report your answer to TWO places past the decimal. 1b. Calculate the pH of a 4.64 × 10−6M HI solution. Report your answer to TWO places past the decimal. 1c. Calculate the pH of a 0.00312 M RbOH solution. Report your answer to TWO places past the decimal. 1d. Calculate the pH of a 0.006 M RbOH solution. Report your answer to TWO places past the decimal.
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Consider the following galvanic cell: Pt(s)|Br- (aq)|Br2(1)||Cr2O72- (aq), Cr3+ (aq)|Pt(s) Q6.1 3 Points a. What is n, the number of electrons transferred in the balanced overall reaction that occurs in this galvanic cell? Write the number in the box below. Enter your answer...