The sample of nephrite jade shown in the introductory story had the formula Ca2(Mg, Fe)5(Si4O11)2(OH)2. (Iron...
The sample of nephrite jade shown in the introductory story had the formula Ca2(Mg, Fe)5(Si4O11)2(OH)2. (Iron in this formula is in the +2 oxidation state.)
(a) What is the charge on the (Si4O11)n ion in this compound?
(b) What is the oxidation state of Si in this compound?
(c) What is the percent of iron in a sample of jade that
has the formula Ca2(Mg0.35Fe0.65)5(Si4O11)2(OH)2?
(d) The iron ions in the formula for nephrite have the same degree of paramagnetism as seen for Fe2+(g). How many unpaired electrons per iron ion does this represent?
Homework Answers
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The sample of nephrite jade shown in the introductory story had
the formula Ca2(Mg, Fe)5(Si4O11)2(OH)2. (Iron...
2. The chemical formula for biotite is K2Mg2ASİ,01 (OH) 2 Calculate the coordinator number for K....
2. The chemical formula for biotite is K2Mg2ASİ,01 (OH) 2 Calculate the coordinator number for K. Using the table identify the positions of the K number of O ions surrounding the K ion? and O ions. Does your predicted value agree with the r minerals in the earth's crust are the silicate minerals. The basic building block for the silicate minerals is the silica tetrahedron. The tetrahedrons can be arranged in different ways to create the various classes of silicate...
a-c 32. Consider the complex ion [CoF (OH)2]3 (4 pts) What is the oxidation state of cobalt in this compound? How many d electrons does the cobalt ion have? a. (4 pts) Draw a d orbital splitting d...
a-c
32. Consider the complex ion [CoF (OH)2]3 (4 pts) What is the oxidation state of cobalt in this compound? How many d electrons does the cobalt ion have? a. (4 pts) Draw a d orbital splitting diagram for this ion. How many unpaired electrons are in the complex ion? b. (2 pts) Can this ion exhibit isomerization? If so, what type? c. 10 of 14
32. Consider the complex ion [CoF (OH)2]3 (4 pts) What is the oxidation state...
e precipitate that forms when solutions of Na3PO4 and Fe(NO2)3 are mixed? 43) 2) What is...
e precipitate that forms when solutions of Na3PO4 and Fe(NO2)3 are mixed? 43) 2) What is the precini A) Fe3PO4 B) PO4NO3 C) NaFe D) NaNO3 E) FePO4 RUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 44) One atomic mass unit is the same as one gram. 45) In electrolysis, electrical energy is used to drive a non-spontaneous oxidation-reduction reaction to occur. 45) - 46) One mole of iron contains 6.022 x 1023...
RODOX EXAMINATION An oxidation-reduction reaction involves the (1) sharing of electrons &n
RODOX EXAMINATION An oxidation-reduction reaction involves the (1) sharing of electrons (3) transfer of electrons (2) sharing of protons (4) transfer of protons In this reaction, CO→ 2 CO + O2 the oxidation number of carbon changes from: (1) 0 to +4 (3) +3 to 0 (2) +2 to +4 (4) +4 to +2 Which balanced equation represents a redox reaction? AgNO3 (aq) +NaCl (aq) →AgCl (s) +NaNO3 (aq) H2CO3 (aq)...
A) , and in Co(NH3)4Cl 2]NO 3, the counter ion is In K 4[Fe(CN) 6], the...
A) , and in Co(NH3)4Cl 2]NO 3, the counter ion is In K 4[Fe(CN) 6], the counter ion is akt:cr b.kt; NO3- C. CN ; cr d. CN ; NO3 e. Fe2+, CO3+ B) How many ions are formed when [CO(NH 3) 5CICI 2 dissolves in water? a. 5 d. 4 e. 2 C) What is the oxidation state of the nickel atom in the Ni(CN) 53 complex ion? a. +1 b.+3 C. +2 d. +4 e. +0 ОООО oooo...
8 In the thermite reaction: 2 Al(s) + Fe2O3(s) ---> 2 Fe(s) + Al2O3(s) So much...
8 In the thermite reaction: 2 Al(s) + Fe2O3(s) ---> 2 Fe(s) + Al2O3(s) So much heat is generated that the iron initially formed is a molten liquid. Which of the following statements is consistant with the reaction? the reaction is endothermic; aluminum is oxidized and iron is reduced.the reaction is not an oxidation reduction reaction. the reaction is exothermic; aluminum is oxidized and iron is reduced.the reaction is endothermic; aluminum is reduced and iron is oxidized.the reaction is exothermic; aluminum...
4.30. Using solubility rules, predict the solubility in water of the following ionic compounds. a. AI(OH) b. CaN...
4.30. Using solubility rules, predict the solubility in water of the following ionic compounds. a. AI(OH) b. CaN C. NH4CI d. KOH 4.32. Using solubility rules, decide whether the following ionic solids are soluble or insoluble in water. If they are soluble, write the chemical equation for dissolving in water and indicate what ions you would expect to be present in solution. (NE SO b. BaCO c. Pb(NOs)2 d. Ca(OH) 4.34. Write net ionic equations for the following molecular equations....
Question 51 (8 points) A 10 gram sample of which substance contains the greatest number of...
Question 51 (8 points) A 10 gram sample of which substance contains the greatest number of hydrogen atoms? 10 grams of CH4 10 grams of HCI 10 grams of PH 3 10 grams of H2 Question 52 (8 points) What is the oxidation number of nitrogen in the nitrate ion? :0: +6 +5 O-1 +1 Question 49 (8 points) Which set of quantum numbers is correct and consistent with n = 4? me = -3 ms = +1 me =...
19) Iron is produced from its one by the reactions 2 C O 2 Fe:O )...
19) Iron is produced from its one by the reactions 2 C O 2 Fe:O ) CO 2 es 3COAR) How many moles of Ol) are needed to produce 1 mole of Fe(s)? a) 1/2 mole o 1/4 moto 1 mole O d) 3/2 moleo 20) Iron (1) sulfate reacts with potassium hydroxide in aqueous solution to form a precipitate. The net lonic equation for this reaction is: a) Fel. 50. Feso, 2 50, SO. c)Fe +20 Feco ). d)...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
2. The chemical formula for biotite is K2Mg2ASİ,01 (OH) 2 Calculate the coordinator number for K. Using the table identify the positions of the K number of O ions surrounding the K ion? and O ions. Does your predicted value agree with the r minerals in the earth's crust are the silicate minerals. The basic building block for the silicate minerals is the silica tetrahedron. The tetrahedrons can be arranged in different ways to create the various classes of silicate...
a-c
32. Consider the complex ion [CoF (OH)2]3 (4 pts) What is the oxidation state of cobalt in this compound? How many d electrons does the cobalt ion have? a. (4 pts) Draw a d orbital splitting diagram for this ion. How many unpaired electrons are in the complex ion? b. (2 pts) Can this ion exhibit isomerization? If so, what type? c. 10 of 14
32. Consider the complex ion [CoF (OH)2]3 (4 pts) What is the oxidation state...
e precipitate that forms when solutions of Na3PO4 and Fe(NO2)3 are mixed? 43) 2) What is the precini A) Fe3PO4 B) PO4NO3 C) NaFe D) NaNO3 E) FePO4 RUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 44) One atomic mass unit is the same as one gram. 45) In electrolysis, electrical energy is used to drive a non-spontaneous oxidation-reduction reaction to occur. 45) - 46) One mole of iron contains 6.022 x 1023...
A) , and in Co(NH3)4Cl 2]NO 3, the counter ion is In K 4[Fe(CN) 6], the counter ion is akt:cr b.kt; NO3- C. CN ; cr d. CN ; NO3 e. Fe2+, CO3+ B) How many ions are formed when [CO(NH 3) 5CICI 2 dissolves in water? a. 5 d. 4 e. 2 C) What is the oxidation state of the nickel atom in the Ni(CN) 53 complex ion? a. +1 b.+3 C. +2 d. +4 e. +0 ОООО oooo...
4.30. Using solubility rules, predict the solubility in water of the following ionic compounds. a. AI(OH) b. CaN C. NH4CI d. KOH 4.32. Using solubility rules, decide whether the following ionic solids are soluble or insoluble in water. If they are soluble, write the chemical equation for dissolving in water and indicate what ions you would expect to be present in solution. (NE SO b. BaCO c. Pb(NOs)2 d. Ca(OH) 4.34. Write net ionic equations for the following molecular equations....
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19) Iron is produced from its one by the reactions 2 C O 2 Fe:O ) CO 2 es 3COAR) How many moles of Ol) are needed to produce 1 mole of Fe(s)? a) 1/2 mole o 1/4 moto 1 mole O d) 3/2 moleo 20) Iron (1) sulfate reacts with potassium hydroxide in aqueous solution to form a precipitate. The net lonic equation for this reaction is: a) Fel. 50. Feso, 2 50, SO. c)Fe +20 Feco ). d)...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
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