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08 Question (1 point) How many unpaired electrons are there in each species below? See page...
06 Question (1 point) See page 351 2nd attempt See Periodic Table See Hint Although no...
06 Question (1 point) See page 351 2nd attempt See Periodic Table See Hint Although no currently known elements contain electrons in gorbitals, such elements may be synthesized someday. What is the minimum atomic number of an element whose ground-state atoms have an electron in a gorbital? > 1st attempt
08 Question (1 point) e See page 789 Calculate the value of K at 25°C for...
08 Question (1 point) e See page 789 Calculate the value of K at 25°C for the reaction: 5Fe2+ (aq) + Mno, (aq) +8H+ (aq) —→ 5Fe3+ (aq) + Mn²+ (aq) + 4H,0(1) Use the standard reduction potentials below to complete the calculation: Mno] (aq) + 8H+ (aq) +52 —— Mn2+ (aq) + 4H2O(1) E° = 1.507 V Fe3+ (aq) +1e —— Fe2+ (aq) E° = 0.770 V 1st attempt . See Periodic Table D See Hint K =
02 Question (1 point) e See page 690 1st attempt i See Periodic Table D See...
02 Question (1 point) e See page 690 1st attempt i See Periodic Table D See Hint Calculate the pH of stomach acid in which [HCl] = 0.149 M.
this is the first question its just my second attempt a See page 935 08 Question...
this is the first question its just my second attempt
a See page 935 08 Question (2 points) A sample containing 223Ra (t12 11.4 days) has an activity of 6.60x105 Bq. 2nd attempt Part 1 (1 pt) See Periodic Table See Hint How many atoms of 223Ra are present? 12 atoms x 10 1.3 Part 2 (1 pt) How many moles of 223Ra are present? x 10-2 moles 2.15
See page 181 11 Question (1 point) Determine the oxidation numbers of each of the elements...
See page 181 11 Question (1 point) Determine the oxidation numbers of each of the elements in the following reaction, and identify which of them, if any, are oxidized or reduced. 3NO2(s)+H,0() 2H (aq) +2NO, (aq) +NO(g) 1st attempt See Periodic Table Q See Hint Part 1 (0.2 point) NO2 N: O: Q See Hint Part 2 (0.2 point) Part 2 (0.2 point) O See Hint Но Н: O: Part 3 (0.1 point) Q See Hint H* H: Part 4...
07 Question (1 point) e See page 690 (1 point) V 1st attempt i See Periodic...
07 Question (1 point) e See page 690 (1 point) V 1st attempt i See Periodic Table D See Hint A solution is made by dissolving 0.06000 moles of Ba(OH)2 in enough water to make 770.0 mL of solution. What is the pH of the resulting solution?
r 11 Homework 60% 05/20/19 12 Question (1 point) a See page 489 Rank the compounds below in order of increasing vapor pressure at 298 K. 1st attempt hi See Periodic Table See Hint Question List (3...
r 11 Homework 60% 05/20/19 12 Question (1 point) a See page 489 Rank the compounds below in order of increasing vapor pressure at 298 K. 1st attempt hi See Periodic Table See Hint Question List (3 images) (Drag and drop into the appropriate area) H2 H2 ne ne やSUBMIT ANSWER K 12/21> 11 OF 21 QUESTIONS COMPLETED
r 11 Homework 60% 05/20/19 12 Question (1 point) a See page 489 Rank the compounds below in order of increasing vapor...
14 Question e See page 585 (1 point) 1st attempt See Periodic Table See Hint -5 -1 The rate constant for the reaction b...
14 Question e See page 585 (1 point) 1st attempt See Periodic Table See Hint -5 -1 The rate constant for the reaction below was determined to be 3.241x10 s a 225 kJ/mol. What wou Id be the value of the rate constant at 9.40x10 K? N20(g) > N2 (8) +O (g) 800 K. The activation energy of the reaction is -1
14 Question e See page 585 (1 point) 1st attempt See Periodic Table See Hint -5 -1 The...
Question (1 point) A compound containing only C. H. and O. was extracted from the bark of the sassafras tree. The combustion of 82.3 mg produced 223 mg of CO2 and 45.8 mg of H20. The molar mass o...
Question (1 point) A compound containing only C. H. and O. was extracted from the bark of the sassafras tree. The combustion of 82.3 mg produced 223 mg of CO2 and 45.8 mg of H20. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. e See page 299 1st attempt i See Periodic Table Part 1 (0.5 point) Note that formulas of organic compounds should fhrst list the carbon and hydrogen with the rest...
18 Question (1 point) See page 295 The density of a test is to be determined...
18 Question (1 point) See page 295 The density of a test is to be determined experimentally at 297.7 Kusing an apparatus constructed of a 4400L glassbulb volume that is attached to a vacuum pump. The mass of the evacuated bulb is 21.303 8. After it is filed with the test gas to a pressure of 0.0750 at the mass increases to 22.100g Assume the gas beves ideally. 1st attempt Part 1 (0.3 point) W See Periodic Table See Hint...
06 Question (1 point) See page 351 2nd attempt See Periodic Table See Hint Although no currently known elements contain electrons in gorbitals, such elements may be synthesized someday. What is the minimum atomic number of an element whose ground-state atoms have an electron in a gorbital? > 1st attempt
08 Question (1 point) e See page 789 Calculate the value of K at 25°C for the reaction: 5Fe2+ (aq) + Mno, (aq) +8H+ (aq) —→ 5Fe3+ (aq) + Mn²+ (aq) + 4H,0(1) Use the standard reduction potentials below to complete the calculation: Mno] (aq) + 8H+ (aq) +52 —— Mn2+ (aq) + 4H2O(1) E° = 1.507 V Fe3+ (aq) +1e —— Fe2+ (aq) E° = 0.770 V 1st attempt . See Periodic Table D See Hint K =
02 Question (1 point) e See page 690 1st attempt i See Periodic Table D See Hint Calculate the pH of stomach acid in which [HCl] = 0.149 M.
this is the first question its just my second attempt
a See page 935 08 Question (2 points) A sample containing 223Ra (t12 11.4 days) has an activity of 6.60x105 Bq. 2nd attempt Part 1 (1 pt) See Periodic Table See Hint How many atoms of 223Ra are present? 12 atoms x 10 1.3 Part 2 (1 pt) How many moles of 223Ra are present? x 10-2 moles 2.15
See page 181 11 Question (1 point) Determine the oxidation numbers of each of the elements in the following reaction, and identify which of them, if any, are oxidized or reduced. 3NO2(s)+H,0() 2H (aq) +2NO, (aq) +NO(g) 1st attempt See Periodic Table Q See Hint Part 1 (0.2 point) NO2 N: O: Q See Hint Part 2 (0.2 point) Part 2 (0.2 point) O See Hint Но Н: O: Part 3 (0.1 point) Q See Hint H* H: Part 4...
07 Question (1 point) e See page 690 (1 point) V 1st attempt i See Periodic Table D See Hint A solution is made by dissolving 0.06000 moles of Ba(OH)2 in enough water to make 770.0 mL of solution. What is the pH of the resulting solution?
r 11 Homework 60% 05/20/19 12 Question (1 point) a See page 489 Rank the compounds below in order of increasing vapor pressure at 298 K. 1st attempt hi See Periodic Table See Hint Question List (3 images) (Drag and drop into the appropriate area) H2 H2 ne ne やSUBMIT ANSWER K 12/21> 11 OF 21 QUESTIONS COMPLETED
r 11 Homework 60% 05/20/19 12 Question (1 point) a See page 489 Rank the compounds below in order of increasing vapor...
14 Question e See page 585 (1 point) 1st attempt See Periodic Table See Hint -5 -1 The rate constant for the reaction below was determined to be 3.241x10 s a 225 kJ/mol. What wou Id be the value of the rate constant at 9.40x10 K? N20(g) > N2 (8) +O (g) 800 K. The activation energy of the reaction is -1
14 Question e See page 585 (1 point) 1st attempt See Periodic Table See Hint -5 -1 The...
Question (1 point) A compound containing only C. H. and O. was extracted from the bark of the sassafras tree. The combustion of 82.3 mg produced 223 mg of CO2 and 45.8 mg of H20. The molar mass of the compound was 162 g/mol. Determine its empirical and molecular formulas. e See page 299 1st attempt i See Periodic Table Part 1 (0.5 point) Note that formulas of organic compounds should fhrst list the carbon and hydrogen with the rest...
18 Question (1 point) See page 295 The density of a test is to be determined experimentally at 297.7 Kusing an apparatus constructed of a 4400L glassbulb volume that is attached to a vacuum pump. The mass of the evacuated bulb is 21.303 8. After it is filed with the test gas to a pressure of 0.0750 at the mass increases to 22.100g Assume the gas beves ideally. 1st attempt Part 1 (0.3 point) W See Periodic Table See Hint...
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