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Can you please answer all my questions please. I really need the answers to all the questions please
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Can you please answer all my questions please. I
really need the answers to all the...
A solution is prepared by mixing 25 mL (0.22 mol, 16 g) of pentane (the solute)...
A solution is prepared by mixing 25 mL (0.22 mol, 16 g) of pentane (the solute) with 45 mL (0.34 mol, 30 g) of hexane (the solvent). Assuming that the volumes add on mixing, answer questions 35-36 below. (35) What is the molarity of the pentane? [1] 3.1 mol/kg [2] 3.1 mol/L [3] 7.3 mol/kg [4] 7.3 mol/L [5] 45.8 mol/L (36) 25.00 cm3 of a 0.7892 mol.dm-3 solution of potassium hydroxide is transferred to an empty 350.00 cm3 volumetric...
THERES MORE THAN ONE PICTURE. I NEED ALL ANSWERED THANK YOU QUESTION 2 Calculate the pOH...
THERES MORE THAN ONE PICTURE. I NEED ALL ANSWERED THANK
YOU
QUESTION 2 Calculate the pOH of a solution at 25.0°C that contains 2.95 x 10-12 M hydronium ions. 2.95 O 11.53 12.00 O 7.00 2.47 QUESTION 1 An aqueous solution at 25.0°C contains [H') -0,085 M. What is the pH of the solution? O 13.0 O 0.9850 O 1.07 O 1.20 10-13 O -1.07 QUESTION 2 10-12 M hydronium ions. Calculate the pOH of a solution at 25.0°C that...
Please answer all multiple choice All questions need to be answered! Questions 1-20 are multiple choice...
Please answer all multiple choice
All
questions need to be answered!
Questions 1-20 are multiple choice questions. Please mark the correct circle on the Scantron form. Only the Scantron form will be graded. Scantron must be filled in before time is called Which of the following acids is not a strong acid? 5 HI b. HBr to SEHNO, HF HESO. Venter 2. Which of the following is an example of an empirical formula: a Cs Ho HO LP Fea(SO) d)...
please help me with these questions, I am having a really hard time with chemistry and...
please help me with these questions, I am having a really hard time with chemistry and this is my last assignment 1. Consider the following half-reactions: Half-reaction E° (V) Br2(l) + 2e-____>2Br-(aq) 1.080V Cd2+(aq) + 2e-____>Cd(s) -0.403V Cr3+(aq) + 3e-____>Cr(s) -0.740V The strongest oxidizing agent is: enter formula The weakest oxidizing agent is: The weakest reducing agent is: The strongest reducing agent is: Will Br2(l) oxidize Cr(s) to Cr3+(aq)? _____ (yes or no) Which species can be reduced...
I just understand how to get to the answers of these questions. Please help with all...
I just understand how to get
to the answers of these questions. Please help with all of them.
Especially with the reactions
33 Determine the oxidation number of the underlined element in each of the following chemical formulas. Your answers must include any calculations and/or reasoning in how you derived the oxidation numbers. (4 marks total) а) О, b) Н.РО, с) MnO; d) C0 (5 marks total) 34. Identify the element oxidized and the element reduced, in this chemical equation:...
can you please help.me answer these three questions please? I am really desperate and in need...
can you please help.me answer these three questions
please? I am really desperate and in need of help.
Question 1 Consider the following reaction: Al(s) + Fe2+ (aq) —— A13+ (aq) + Fe (s) When this redox equation is balanced, the coefficient in front of Fe (s) is 0 03 04 Question 2 Consider the following redox reaction in acidic solution: BrO3 + N2H4 Br + N2 When this redox equation is balanced, the coefficient in front of N2 is...
i need the right answer with shown all work for my mistake 4. DETERMINATION OF THE...
i need the right answer with shown all work for my
mistake
4. DETERMINATION OF THE RATE LAW For the same reaction problem 3 above, consider the following data for the kinetics of this reaction: 2 N2O3(g) ----4NO2(g) + O2(g) Experiment Intial [N, O1 (mol L') Initial Rate of Reaction (mol L's) 3.0 x 10 9.0 x 10 9. O x 10 2.7 x 10 Determine the rate Law and rate constant of this reaction at this temperature (Do this...
can you please help.me answer these three questions please? I am really desperate and in need...
can you please help.me answer these three questions
please? I am really desperate and in need of help.
Question 16 3 pts Electrolysis of a solution containing Al(NO3)3 (s) to give aluminum metal is carried out using a current of 2.12 A for 4.9 hours. How many grams of aluminum metal will be formed? O 0.25 g O 3.5 g O 1.87 g O 44.09 g O 5,655 g Question 22 in + ? 92Kr + 141Ba + 3 in...
I am having trouble with these questions. Can anybody help me please. Given the following correctly...
I
am having trouble with these questions. Can anybody help me please.
Given the following correctly BALANCED reaction: PENTANE (72 g/mol) 5. (3 pts) How grams of CO2 are created from 6. (3 pts) How many grams of pentane will be needed t 1440 grams of CsH12 (pentane). c5H12 + 802 → 5CO2 + 6H20 ΔΗ=-840 kcals/mol create 250 kilocalories? (the energy in a candy bar) 7. (2 pts) When 100 moles of pentane (CsH2) are mixed with 20 kilograms...
THERES MORE THAN ONE PICTURE. I NEED ALL ANSWERED THANK
YOU
QUESTION 2 Calculate the pOH of a solution at 25.0°C that contains 2.95 x 10-12 M hydronium ions. 2.95 O 11.53 12.00 O 7.00 2.47 QUESTION 1 An aqueous solution at 25.0°C contains [H') -0,085 M. What is the pH of the solution? O 13.0 O 0.9850 O 1.07 O 1.20 10-13 O -1.07 QUESTION 2 10-12 M hydronium ions. Calculate the pOH of a solution at 25.0°C that...
Please answer all multiple choice
All
questions need to be answered!
Questions 1-20 are multiple choice questions. Please mark the correct circle on the Scantron form. Only the Scantron form will be graded. Scantron must be filled in before time is called Which of the following acids is not a strong acid? 5 HI b. HBr to SEHNO, HF HESO. Venter 2. Which of the following is an example of an empirical formula: a Cs Ho HO LP Fea(SO) d)...
I just understand how to get
to the answers of these questions. Please help with all of them.
Especially with the reactions
33 Determine the oxidation number of the underlined element in each of the following chemical formulas. Your answers must include any calculations and/or reasoning in how you derived the oxidation numbers. (4 marks total) а) О, b) Н.РО, с) MnO; d) C0 (5 marks total) 34. Identify the element oxidized and the element reduced, in this chemical equation:...
can you please help.me answer these three questions
please? I am really desperate and in need of help.
Question 1 Consider the following reaction: Al(s) + Fe2+ (aq) —— A13+ (aq) + Fe (s) When this redox equation is balanced, the coefficient in front of Fe (s) is 0 03 04 Question 2 Consider the following redox reaction in acidic solution: BrO3 + N2H4 Br + N2 When this redox equation is balanced, the coefficient in front of N2 is...
i need the right answer with shown all work for my
mistake
4. DETERMINATION OF THE RATE LAW For the same reaction problem 3 above, consider the following data for the kinetics of this reaction: 2 N2O3(g) ----4NO2(g) + O2(g) Experiment Intial [N, O1 (mol L') Initial Rate of Reaction (mol L's) 3.0 x 10 9.0 x 10 9. O x 10 2.7 x 10 Determine the rate Law and rate constant of this reaction at this temperature (Do this...
can you please help.me answer these three questions
please? I am really desperate and in need of help.
Question 16 3 pts Electrolysis of a solution containing Al(NO3)3 (s) to give aluminum metal is carried out using a current of 2.12 A for 4.9 hours. How many grams of aluminum metal will be formed? O 0.25 g O 3.5 g O 1.87 g O 44.09 g O 5,655 g Question 22 in + ? 92Kr + 141Ba + 3 in...
I
am having trouble with these questions. Can anybody help me please.
Given the following correctly BALANCED reaction: PENTANE (72 g/mol) 5. (3 pts) How grams of CO2 are created from 6. (3 pts) How many grams of pentane will be needed t 1440 grams of CsH12 (pentane). c5H12 + 802 → 5CO2 + 6H20 ΔΗ=-840 kcals/mol create 250 kilocalories? (the energy in a candy bar) 7. (2 pts) When 100 moles of pentane (CsH2) are mixed with 20 kilograms...
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