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Question 2 (1 point) Consider the signs for ΔΗ and ΔS, for different reactions, which of...
Question 3 (1 point) A solution is prepared in a 50 mL flask by mixing 2...
Question 3 (1 point) A solution is prepared in a 50 mL flask by mixing 2 mL of 0.00322 M sodium thiocyanate with 15 mL of 0.2 M iron (IlI) nitrate. Nitric acid is used to fill the flask to the 50 mL mark. What is the concentration of FesCN2+ in the prepared solution 1.288x10-4 M 1.095x10-4 M 9.908x10-5 M 4.29x10-4 M Question 4 (1 point) Saved Consider the signs for AH and AS, for different reactions. Which of the...
Calculate the initial concentration of iron(III) in solution #1, #2, #3. Beaker (mL) Table 1. Reagent...
Calculate the initial concentration of iron(III) in
solution #1, #2, #3.
Beaker (mL) Table 1. Reagent Solutions Provided by the Stockroom Solution Name Reagent [Reagent] (M) Volume (mL) Standard iron Fe(NO3)3 2.50 x 10 in 0.10 M HNO3 nitric acid HNO3 0.10 120 35 50 250 conc. SCN KSCN 0.50 30 50 dilute SCN KSCN 2.50 x 10-3 30 50 Worksheet 1 #1 5.00 #2 10.00 #3 15.00 Dilute iron (mL) [Fe**] (M) [Fe(SCN)?*] (M) %T 480 58.9 35.8 21.5...
HELP!!!!! as soon as possible Question 9 (1 point) Which of the following reactions would show...
HELP!!!!! as soon as possible
Question 9 (1 point) Which of the following reactions would show an increase in entran apply. O CaCO3 (s) CaO (s) + CO28) C6H6(s) C6H6() 4 NO (g) + 6 H20 (8) 4 NH3(g) + 5 O2 (g) 2 NIS (s) + 3 O2 (g) - 2 SO2(g) + 2 NIO (s) 2503(9) 2SO2(g) + O2(g) 3 Question 8 (1 point) Which of the following has the highest entoon C6H12(l) at 200 K in a...
Which of the following best describes what you will do in this lab? Question 1 options:...
Which of the following best describes what you will do in this lab? Question 1 options: determine the concentration of nickel ions in an unknown solution. Construct a calibration curve. Be able to use a spectrophotometer. determine the concentration of nickel ions in a known solid. Be able to apply beer's law in order to observe how spectrophotometry works Be able to derive beer's law carry out solution preparation and dilutions. Question 2 (1 point) Which of the following best...
Question 13 of 13> Attempt 1 A standard solution of FeSCN2+ is prepared by combining 9.0...
Question 13 of 13> Attempt 1 A standard solution of FeSCN2+ is prepared by combining 9.0 ml of 0.20 M Fe(NO) with I.0 mL of 0.0020 M KSCN. The standard solution had an absorbance of 0.540. Fe* (ag)+SCN (ag)FeSCN*(a) A trial solution was made in a similar manner, but with a more dilute Fe(NO,), reagent. The initial SCN" concentration. immediately after mixing, was 0.00060 M. This trial solution had absorbance of 0.250. What is the equilibrium concentration of SCN in...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? 62.8 mL 254 mL O 305 ml O 523 mL O 393 mL O Question 2 (1 point) A chemist needs 225 mL of 2.3 M HCl. What volume of 12 M HCl must be dissolved in water...
help please asap please Question 12 (1 point) Which diagram best describes an aqueous son of...
help please asap please
Question 12 (1 point) Which diagram best describes an aqueous son of copper chord Water molecules are omitted for clarity O- FA 09 o Figure Figure D 8098 0.000 Figure E Question 11 (1 point) Which atom is the largest? O carbon O phosphorus silicon nitrogen Question 10 (1 point) For the process O2(g) → 20(g), AH° = 498 kJ.mol-1. What would be the predicted sign of AS rxn and the conditions under which this reaction...
Question 14 (1 point) A solution is prepared by adding 0.0122 moles of HF to a...
Question 14 (1 point) A solution is prepared by adding 0.0122 moles of HF to a 500 ml flask and diluting to the mark. The pH of the solution is 2.43. Calculate the Ky of HF. O 1.80 x 10-1 5.66 x 10-4 4.63 x 10-2 6.67 x 10-4
Introduction to Equilibrium Lab report Please help answering the question #2 (a,b,c,d) Thanks! ...
Introduction to Equilibrium Lab report
Please help answering the question #2 (a,b,c,d)
Thanks!
Question
Procedure
Notebook
Complex ion equilibrium 1. Formation of the complex ion: 38 a) What evidence was there that a new chemical substance had formed? b) How did the reaction change the initial iron and thiocyanate concentrations? Would the reacon av tken place ifthe proportions hadtbenhioneric raior? 2. Adding and removing reactants: a) What effecet did adding the reactants (Fe' or SCN-) have on he briumcmposition? evidence...
Question 19 (1 point) Solid silver can be produced by reacting silver (1) nitrate with copper...
Question 19 (1 point) Solid silver can be produced by reacting silver (1) nitrate with copper according to the reaction below. What is the percent yield of a reaction if 9.752 g of Cu was placed in silver (1) nitrate solution and produced 11.500 g of silver (Assume the AgNO3 is in excess)? Cu(s) + 2 AgNO3(aq) Cu(NO3)2(aq) + 2 Ag(s) Your Answer: Answer units Question 20 (1 point) How many moles of chloride ions are present in a 300.0...
Question 3 (1 point) A solution is prepared in a 50 mL flask by mixing 2 mL of 0.00322 M sodium thiocyanate with 15 mL of 0.2 M iron (IlI) nitrate. Nitric acid is used to fill the flask to the 50 mL mark. What is the concentration of FesCN2+ in the prepared solution 1.288x10-4 M 1.095x10-4 M 9.908x10-5 M 4.29x10-4 M Question 4 (1 point) Saved Consider the signs for AH and AS, for different reactions. Which of the...
Calculate the initial concentration of iron(III) in
solution #1, #2, #3.
Beaker (mL) Table 1. Reagent Solutions Provided by the Stockroom Solution Name Reagent [Reagent] (M) Volume (mL) Standard iron Fe(NO3)3 2.50 x 10 in 0.10 M HNO3 nitric acid HNO3 0.10 120 35 50 250 conc. SCN KSCN 0.50 30 50 dilute SCN KSCN 2.50 x 10-3 30 50 Worksheet 1 #1 5.00 #2 10.00 #3 15.00 Dilute iron (mL) [Fe**] (M) [Fe(SCN)?*] (M) %T 480 58.9 35.8 21.5...
HELP!!!!! as soon as possible
Question 9 (1 point) Which of the following reactions would show an increase in entran apply. O CaCO3 (s) CaO (s) + CO28) C6H6(s) C6H6() 4 NO (g) + 6 H20 (8) 4 NH3(g) + 5 O2 (g) 2 NIS (s) + 3 O2 (g) - 2 SO2(g) + 2 NIO (s) 2503(9) 2SO2(g) + O2(g) 3 Question 8 (1 point) Which of the following has the highest entoon C6H12(l) at 200 K in a...
Question 13 of 13> Attempt 1 A standard solution of FeSCN2+ is prepared by combining 9.0 ml of 0.20 M Fe(NO) with I.0 mL of 0.0020 M KSCN. The standard solution had an absorbance of 0.540. Fe* (ag)+SCN (ag)FeSCN*(a) A trial solution was made in a similar manner, but with a more dilute Fe(NO,), reagent. The initial SCN" concentration. immediately after mixing, was 0.00060 M. This trial solution had absorbance of 0.250. What is the equilibrium concentration of SCN in...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? 62.8 mL 254 mL O 305 ml O 523 mL O 393 mL O Question 2 (1 point) A chemist needs 225 mL of 2.3 M HCl. What volume of 12 M HCl must be dissolved in water...
help please asap please
Question 12 (1 point) Which diagram best describes an aqueous son of copper chord Water molecules are omitted for clarity O- FA 09 o Figure Figure D 8098 0.000 Figure E Question 11 (1 point) Which atom is the largest? O carbon O phosphorus silicon nitrogen Question 10 (1 point) For the process O2(g) → 20(g), AH° = 498 kJ.mol-1. What would be the predicted sign of AS rxn and the conditions under which this reaction...
Question 14 (1 point) A solution is prepared by adding 0.0122 moles of HF to a 500 ml flask and diluting to the mark. The pH of the solution is 2.43. Calculate the Ky of HF. O 1.80 x 10-1 5.66 x 10-4 4.63 x 10-2 6.67 x 10-4
Introduction to Equilibrium Lab report
Please help answering the question #2 (a,b,c,d)
Thanks!
Question
Procedure
Notebook
Complex ion equilibrium 1. Formation of the complex ion: 38 a) What evidence was there that a new chemical substance had formed? b) How did the reaction change the initial iron and thiocyanate concentrations? Would the reacon av tken place ifthe proportions hadtbenhioneric raior? 2. Adding and removing reactants: a) What effecet did adding the reactants (Fe' or SCN-) have on he briumcmposition? evidence...
Question 19 (1 point) Solid silver can be produced by reacting silver (1) nitrate with copper according to the reaction below. What is the percent yield of a reaction if 9.752 g of Cu was placed in silver (1) nitrate solution and produced 11.500 g of silver (Assume the AgNO3 is in excess)? Cu(s) + 2 AgNO3(aq) Cu(NO3)2(aq) + 2 Ag(s) Your Answer: Answer units Question 20 (1 point) How many moles of chloride ions are present in a 300.0...
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