If an octahedral iron(II) complex is diamagnetic, which of the following sets of conditions best describes the complex? a. low-spin, Delta 0 small b. low-spin, Delta 0 large c. high-spin, Delta 0 small d. high-spin, Delta 0 large e. none

13,090 questions

If an octahedral iron(II) complex is diamagnetic, which of the following sets of conditions best describes the complex? a. low-spin, Delta 0 small b. low-spin, Delta 0 large c. high-spin, Delta 0 small d. high-spin, Delta 0 large e. none of these Answer C

asked by Anonymous on May 6, 2014
2. Chemistry

Got another practice question but I'm really stumped on this one: If the [ZnCl4]^2- ion is diamagnetic what must its structure be and why - octahedral, tetrahedral or square planar? I know that diamagnetic means that all its electrons are paired and that

asked by Miaow on May 13, 2012
3. College Chemistry Lab

The absorbance of a 6.3x10^-5M solution of an iron complex was measured to be 0.328 at the optimum wavelength. A second solution of the iron complex has an absorbance of 0.833 measured under identical conditions. What is the molarity of the complex in the

asked by L** on March 15, 2010
4. Chemistry

If you had this complex ion [CoCo3(NH3)4]^+, where the CO3^-2 is a bidentate ligand. what is the oxidation state of the cobalt and would this complex ion be octahedral or square planar.

asked by Anonymous on May 13, 2009
5. chemistry

Really need help on figuring out the formula for Iron Complex. The question was: 4.0 g of ferrous ammonium sulphate, FeS04(NH4)2*SO4*6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. I got the moles of ferrous

asked by Nika on November 28, 2010
6. chem

is F2 +2 ion diamagnetic or paramagnetic? I think its diamagnetic because it loses 2 electrons and it still has no unpaired pairs...i think...thanks.

asked by Kaylie on December 1, 2009
7. Chemistry terms

Match the terms with the correct definitions. 1. ligand 2. coordination compound 3. Lewis base 4. complex ion 5. bidentate ligand 6. octahedral complex a) a ligand that can form two bonds (donate two electron pairs) to a metal ion. b) a neutral compound

8. Coordination Chemistry

A particular metal ion octahedral complex has the same number of unpaired electrons (non-zero) whether the complex uses weak or strong field ligands. List several fourth period transition metal ions that could have this behavior. Also, if someone could

asked by Alisha on December 1, 2012
9. English

Choose the term that best describes the underline term. 1. The toy "that Fido loves to chew" is made by hand. a. noun clause b. direct clause c. adverb clause d. adjective clause** Choose the term that describes the sentence shown. 1. If you fail to plan,

10. Chemistry

Based on its electronic configuration an atom of manganese would have________unpaired electrons and would be expected to be________. (a)3,paramagnetic (b)2;diamagnetic (c)0,diamagnetic (d)5,paramagnetic

asked by Kayla on September 21, 2009
11. English

Choose the term that describes the type of sentence shown. If you are in line early, you'll be sure to get the best tickets. A.) compound-complex B.) complex C.) compound D.) simple I think it is C? John was late to dinner and I was late to the movies. A.)

asked by Cassie on December 16, 2013
12. chemistry - DrBob222

For this question can u please explain steps 3 and 4 4.0 g of ferrous ammonium sulphate, FeS04(NH4)2 SO4 6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. Can someone please show me how to calculate a question

asked by eddy on November 15, 2010
13. English

1.) Choose the term that best describes the type of sentence shown. If you fail to plan, you plan to fail. a.) Simple. b.) Complex c.) Compound d.) Compound complex B 2.) Chose the term that describes the type of sentence shown. John was late to dinner and

asked by Help! on January 13, 2016
14. math-complex numbers

Sketch the sets of complex numbers in the complex plane that satisfy the following: a) |z-1|=2 b) |z-3i|=2 c) |z-5+2i|=2 I'm not sure, but are you supposed to rearrange the whole thing to |z|=a+bi? So, part b would be |z|=2+3i.

asked by Rin-chan-san on October 9, 2013
15. Chemistry

A d1 octahedral complex is found to absorb visible light, with the absorption maximum occcurring at 523 nm. a) Calculate the crystal-field splitting energy, Δ , in kJ/mol.

asked by Jematormal91 on May 31, 2012
16. chemistry

How do you know when the complex ion is strong field or weak field when the arrangement is octahedral? How do you choose which is better?

asked by Noorah on December 5, 2011
17. English

Identify the choice that best describes the underlined clause: Doves, WHICH ARE CONSIDERED SYMBOLS OF PEACE AND BEAUTY, are related to plain old pigeons. a. independent clause b. adjective clause*** c. adverb clause d. noun clause Which of the following

asked by BUBBLES on December 10, 2015
18. algebra 2

A manufacturer produces a standard model and a deluxe model of a 13-in. television set. The standard requires 20 h of labor to produce, whereas the deluxe model requires 25 h. The labor available is limited to 300 h per week. In addition, the plant

asked by saRa on November 4, 2009
19. chemistry

Ni(II) coordination compound in an octahedral arrangement. Determine exact formula of compound. Info given: 4.37x10-4 moles of complex in 425 mL of water. You find that 17.49 mL of .1000 M HCl is need to titrate.

asked by tc on May 8, 2012
20. SOC 313

10. An important consideration of neurological conditions is that: (Points : 1) for many neurological conditions, available treatment is plentiful and directed mainly toward curing the disease. the rate of progression and degree of loss of functional

asked by Ms P on March 17, 2013
21. Science

A magnet was placed near a pile that contained both iron and sulfur. The magnet was moved gradually closer to the pile. As it neared the pile, the magnet started attracting small pieces of iron from the pile. What best describes? A. Solution or iron and

asked by Brianna on October 20, 2013
22. chemistry

what transition metal complex is responsible for transporting oxygen in our blood? Also, what is its structure? The transition metal (there are several transition series---I assume you are referring to the 3d transition metals) is iron. As to its sturcure,

asked by Bob on April 17, 2007
23. English

Choose the term that describes the sentence shown. I was thinking about meeting Susan for dinner and then we could go shopping. a. compound*** b. simple c. complex d. compound-complex

asked by Kaai97 on January 27, 2016
24. English

Choose the term that describes the type of sentence shown. The price of admission is a can of food or a child's toy. a. simple*** b. compound c. complex d. compound-complex

asked by Kaai97 on January 27, 2016
25. English

Choose the term that describes the type of sentence shown. The Cause Club, which is a community service group, is holding a dance. a. simple*** b. compound c. complex d. compound-complex

asked by Kaai97 on January 27, 2016
26. ENGLISH HELP PLS

Identify the choice that best describes the sentence. 5. More than 1,000 years passed before Copernicus proposed that the earth orbited the sun. (1 point) a. simple*** b. compound c. complex d. compound-complex *** = my answer

asked by Chloe on November 14, 2016
27. Language Arts

Choose the term that describes the type of sentence shown. The senior class took a trip to Washington, D.C. and Annapolis for their research project. A Compound** B Simple C Complex D Compound-Complex If not A, I was thinking D.

asked by Anonymous on December 26, 2017

Being inventory of 12 sets of paints at a cost of $1.50 each. During the year the store purchased 4 sets at$1.60, 6 sets at $2.20, 6 sets at$2.50, and 10 sets at $3.00. By the end of the year, 25 sets were sold. Caculate the number of paint sets in stock asked by Jean on December 26, 2012 29. English Choose the term that describes the type of sentence shown. The senior class took a trip to Washington, D.C. and Annapolis for their research project. A Compound B Simple C Complex D Compound-Complex I think its C Correct me if I am wrong. asked by Blaw on December 14, 2017 30. INT 1111 QUESTION 1 When using the OR logical operator to connect 2 conditions to create a complex Boolean expression, neither the first condition nor the second condition has to be true for the complex Boolean expression to be true. True False QUESTION 2 String asked by Tom on June 18, 2016 31. Chemistry In a previous experiment, 0.800 g of the green complex iron salt was placed in an Erlenmeyer flask and heated with concentrated sulfuric acid until all oxalate ion was destroyed (CO2, SO2 and H2O are formed). Ferric ion (Fe3+) remained in solution and was asked by Sam on July 12, 2010 32. Chemistry 1 ml of 8.675x10^-3 M sodium salicylate was dispensed in a 100 ml volumetric flask, It was diluted to 100ml mark with acidified 0.02 M Iron (III) Chloride solution. What is the number of moles of Iron (III) Salicylate complex? asked by Emma on November 19, 2012 33. Quick english help Please check & see if I classified these sentences as simple, complex, or compound correctly! 1. His tie is going to choke him unless we can get it off. (Is this a complex sentence?) 2. She laughed so hard until the teacher told her to stop. (Is this a asked by Anonymous on December 14, 2014 34. computer science QUESTION 1 When using the OR logical operator to connect 2 conditions to create a complex Boolean expression, neither the first condition nor the second condition has to be true for the complex Boolean expression to be true. True False QUESTION 2 String asked by Tom on June 18, 2016 35. Chemistry Select the options below that are correct for diamagnetism and paramagnetism. A) Most elements and some compounds are paramagnetic. B) Individual magnetic moments in paramagnetic substances cancel each other. C) Diamagnetism is observed as repulsion in a asked by Kay on December 1, 2010 36. Chemistry Select the options below that are correct for diamagnetism and paramagnetism. A) Most elements and some compounds are paramagnetic. B) Individual magnetic moments in paramagnetic substances cancel each other. C) Diamagnetism is observed as repulsion in a asked by Angeleque on December 1, 2010 37. Chemistry Construct a standard curve (absorbance vs. concentration) using the following results. A 5mL, 10mL, 15mL,20mL aliquot of 0.010M sodium salicylate solution was diluted to 100 mL in four different volumetric flasks with the Iron (III) chloride solution. The asked by Ati on October 16, 2015 38. English Which of the following is a simple sentence? A. Many are called, but few are chosen B. A penny saved is a penny earned C. Fools rush in where angels fear to tread D. If at first you don’t succeed, try, try again 2. Which of the following is a compound asked by Aria on October 26, 2017 39. Calculus & Vectors Sketch the sets of complex numbers that would satisfy the following equations. a) |z| > 3 b) z = bi how would the sketches look like? asked by Rayne on October 3, 2013 40. English Indentify the choice that best describes the scentences. When I arrived at the office, I found that the principle was out; apparently, he had contracted the same sickness as half the school. A- simple B- compound C- complex D- compound complex* I'm pretty asked by Olive on January 9, 2018 41. science Would iron be considered a substance or a mixture? How about blood? Iron is: http://en.wikipedia.org/wiki/Iron substance is a very general term: See definition 3: http://www.m-w.com/dictionary/substance Now blood is living tissue and as such very complex. asked by ???? on June 4, 2007 42. English 10th grade Which of the following correctly describes this sentence? It looms menacingly over the road from the roof of a farmhouse, a flying reptile with a seven-foot wingspan. A. Simple B. Complex C. compound D. compound-complex I felt it was a simple sentence. asked by Jim on December 3, 2014 43. chemistry The "Chemistry in Focus" segment A Magnetic Moment discusses the ability to levitate a frog in a magnetic field because electrons, when sensing a strong magnetic field, respond by opposing it. This is called diamagnetism. Atoms that are diamagnetic have asked by RILEY on October 12, 2010 44. AP Chemistry A mineral crystallizes in a cubic closest packed array of oxygen ions with aluminum ions in some of the octahedral holes and magnesium ions in some of the tetrahedral holes. Deduce the formula of this mineral and predict the fraction of octahedral holes asked by Angel on November 17, 2009 45. math Marvin Company has a beginning inventory of 12 sets of paints at a cost of$1.50 each. During the year, the store purchased 4 sets at $1.60, 6 sets at$2.50 and 10 sets at \$3.00. By the end of the year, 25 sets were sold. Calculated (a) the number of paint

asked by Anonymous on November 17, 2011
46. math

Sketch the sets of complex numbers that would satisfy the following equation: |z| > 3 Explain in detail how the graph will look like. Thanks.

asked by Rinchan on October 11, 2013
47. AP Chem

Write the overall net-ionic reaction that occurs when iron (ii) hydroxide (Fe(OH)2, Ksp = 7.9 x 10^-15) is dissolved in a 0.500 M sodium cyanide solution forming a complex ion. (Fe(CN)6^4-, Kf = 7.7 x 10^36) Determine the value of the equilibrium constant

asked by frank on March 26, 2017
48. English

Identify the structure used in each of the sentences below. 1. The hamburger came from Hamburg, Germany, and the hot dog came from Frankfurt. simple compound complex compound-complex 2. The idea of placing meat on a bun, however, came from the United

asked by Fate on December 28, 2012
49. Chemistry

1) A Cobalt (II) ion has the electron configuration ____? and is ____? The answer choices were: [Ar] 3d5 4s2 diamagnetic [Ar] 3d7 paramagnetic [Ar] 3d5 4s2 para [Ar] 3d7 dia None of these I chose [Ar] 3d5 4s2 diamagnetic 2) Choose the corect statement

asked by Hannah on November 2, 2011
50. Chemistry

In a previous experiment, 0.800 g of the green complex iron salt was placed in an Erlenmeyer flask and heated with concentrated sulfuric acid until all oxalate ion was destroyed (CO2, SO2 and H2O are formed). Ferric ion (Fe3+) remained in solution and was

asked by Linda on May 7, 2007

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 25, 2014

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 26, 2014
53. math help

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 27, 2014
54. math

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 26, 2014
55. math

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 27, 2014
56. URGENT! discrete math help please

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 27, 2014
57. math. Somebody help urgently please

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 27, 2014

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 27, 2014
59. math

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 26, 2014
60. math

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 27, 2014
61. URGENT HELP WITH DISCRETE MATH PLEASE

1. for any sets X and Y, we define the symmetric difference X ∆Y by: X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove the following: -for all sets A,B and C, if A - (B ∩ C) = ∅ then A- C ⊆ B - for all sets A,B and C, if A ⊆ B ∪ C and B

asked by Mary on February 27, 2014
62. U.S History

What where some complex conditions in the south during the recontruction era?

asked by Attalah:) on November 9, 2010
63. MTH 156

The ratio of the distances a 7-iron and a 5-iron will drive a golf ball is 5 to 6. If a golfer averages 153 yards with a 7-iron, how far should he average with a 5-iron

asked by Cluless on November 26, 2010
64. algebra

the discriminant of a quadratic equation is -5 which answers describes the number and type of solution of the equation? 2 complex solutions

asked by jass on February 14, 2017
65. LAL!

are these complex sentence. if it is complex, and are the subordinate clause right are these right? the subordinate clause are in capital letters 1-IN THE 1950S the giants were the national league team from new york.( COMPLEX) 2- fans argued all the time

asked by Sara! on May 12, 2010
66. Algebra

Observe the following sets and answer he quesions given below. A = The set of all residens in Mumbai. B = he set of all residens in Bhopal. C = he sets of all residents in Maharashtra. D = The sets of all residents in India. E = The sets of all residents

asked by Ratan on June 17, 2010
67. Chemistry

The specfic heat of iron is 0.11cal/g C. The heat of fusion of iron, the heat required to convert iron from a solid to liquid at its melting point, is 63.7cal/g. Iron melts at 1530 C. How much heat must be added to 2g of iron at 25c to completely melt it?

asked by Dan on March 15, 2013

put ** by the ones I thought correct Which of the following statements best describes the characteristics of a hypothesis, one of the steps of the scientific method? a)It is a possible answer to a scientific question *** b) It is a scientific inquiry that

asked by billy on September 2, 2014

I put ** by the ones I thought correct Which of the following statements best describes the characteristics of a hypothesis, one of the steps of the scientific method? a)It is a possible answer to a scientific question *** b) It is a scientific inquiry

asked by billy on September 2, 2014
70. health

Which of the following is true in regard to limited data sets? A.Patients must authorize the use of limited data sets. B. Those who receive limited data sets can pass them on witout restrictions. C. Limited data sets cant include a patiemts city, state,

asked by janice on August 30, 2010
71. allied health

I want to say D. Not sure here Which of the following is true in regard to limited data sets? A. Patients must authorize the use of limited data sets. B. Those who receive limited data sets can pass them on without restrictions. C. Limited data sets

asked by james on July 6, 2010
72. allied health

which of the following is true in regard to limited data sets> a. Patients must authorize the use of limited data sets. b. those who receive limited data sets can pass them on without restrictions c. limited data sets can't include a patient's city, state,

asked by Anonymous on October 12, 2010

In an octahedral complex, electrons in dz^2 and dx^2-y^2 orbitals experience a greater repulsion from the lone pairs of electrons on ligands because these orbitals a. contain more electrons than the other three d orbitals. b. each contain one unpaired

asked by Anonymous on May 6, 2014
74. Chemistry

If I am titrating KMnO4 against a sample of Fe2+, but there is also I- in the sample which of the iron and iodine will be oxidised first? Unless something is present in the sample to complex the iodide ion, KMnO4 may titrate both. How are you titatrating

asked by James on March 10, 2007
75. college math for teachers

Use the following sets to complete the givien statements in as many ways as possible. a= a,b,c,d b= e,f c=b,a,c,d d= 1,2,3,4 A. Sets _ and _ are not equivalent and not equal B. Sets _ and _ are not equivalent but are equal. C. Sets _and _ are equivalent

asked by Sueann on January 10, 2010
76. General chemistry ligand

Hello. I have a question about ligands. How do you figure out how many ligands a central metal cation can have? For example, Cu^2+ and NH3. When they combine, it forms Cu(NH3)4^2+ Why does it form 4 ligands oppose to 6? A general rule, which isn't always

asked by Steven on April 26, 2007
77. Math (Algebra)

If the sum of 3 non-zero distinct real numbers a, b, and c is 2, and the two sets {a,b,c} and {1/a,1/b,1/c} are the same, what is the value of a^2+b^2+c^2? Note: Two sets are the same if there is a one-to-one correspondence between their elements. For

asked by Bob on May 6, 2013
78. Chemistry

I looked and could not find anything on iron smelting? Could you explain to me why it is a chemical process? Iron ore is a chemical compound, it has to be decomposed into iron + other. Surely you jest!!! I went to www.google.com and typed in Iron smelting

asked by George on September 9, 2006
79. Geography

Which of the following most accurately describes the difference between climate and weather? (1 point) Climate refers to long-terms conditions; weather refers to daily conditions. Climate refers to severe weather events; weather refers to precipitation.

asked by Christina on August 25, 2014
80. Pre-Algebra

Complete the sentence below. Scatter plots are used to look for a pattern of association, or trend, between ____________ A) one set of values. B) two sets of values. C) three sets of values. D) four sets of values. My Answer: B) two sets of values.

asked by Wendy on March 25, 2013
81. Calculus & Vectors

Sketch the sets of complex numbers that would satisfy the following equations. a)z=2 b)|z|=2 c)(5,4) d)(sqrt2, -sqrt2) Also, please explain how to do it. Thanks.

asked by Rayne on September 28, 2013
82. English

Which answer most accurately describes how the author introduces the three brothers in “The Lost Boys”? She describes them as frightened but determined to look tough. She describes them as overwhelmed but still taking care of themselves. She describes

asked by Quinn on April 16, 2019
83. Chemistry

Need help on a lab results write-up. The lab is the synthesis and analysis of a transition metal complex. General reaction was stated as: Fe(III) + x(acac) -> Fe(acac)x - we were to determine x by completing experiment. x = 1, 2, 3, 4... acac = 2, 4

asked by Leah on February 14, 2013
84. chemistry

Solud iron and steam react at high temperatures to form iron(vi) peroxide and hydrogen gas. How much solid iron is needed to obtained 405 grams of iron(vi) peroxide, with a 84.2% yield?

asked by Junior on September 16, 2013
85. chemistry

Solud iron and steam react at high temperatures to form iron(vi) peroxide and hydrogen gas. How much solid iron is needed to obtained 405 grams of iron(vi) peroxide, with a 84.2% yield?

asked by Junior on September 16, 2013
86. Confidentiality Health

Which of the the following statements is true in regard to limited data sets? A.Limited data sets contain some individual identifiers. B.Patients must authorize the use of limited data sets. C. Those who receive limited data sets can pass them on without

asked by Brenna on February 21, 2012
87. Physics help

A blacksmith at a historical reenactment is making an iron hinge. after placing the iron (0.750 kg) in the fire and shaping it with his hammer it is still at 200 C. he puts the iron piece in an 8 L bucket of water at 25 C. what is the final temp. of the

asked by Kimberly on November 13, 2014

A blacksmith at a historical reenactment is making an iron hinge. after placing the iron (0.750 kg) in the fire and shaping it with his hammer it is still at 200 C. he puts the iron piece in an 8 L bucket of water at 25 C. what is the final temp. of the

asked by Kimberly on November 7, 2014
89. chemistry

Conductivity experiments indicate that tetraamminedichloropalladium (IV) chloride is composed of 3 moles of ions per mole of compound. When silver nitrate solution is added to a solution of the palladium compound, 2 moles of silver chloride per mole of

asked by Anon on December 6, 2014
90. Chemistry

Iron ores have different amounts of iron per kilogram of ore. Calculate the mass percent composition of iron for each iron ore: Fe2O3{\rm Fe_2O_3} (hematite), Fe3O4{\rm Fe_3O_4} (magnetite), FeCO3{\rm FeCO_3} (siderite).

asked by Ana on March 5, 2014
91. math

the ratio of the distances a 7-iron and a 5- iron will dirve a golf ball is 5 to 6. if a golfer averages 153 yards with a 7- iron, how far should he averages with a 5-iron?

asked by Anonymous on September 26, 2010
92. math

Write the numbers in order of increasing size. 1/2,3/4,2/3,0.95 Convert to standard notation. 1.91 x 10-4 The ratio of the distances a 7-iron and a 5-iron will drive a golf ball is 5 to 6. If a golfer averages 153 yards with a 7-iron how far should he

asked by anonymous on March 7, 2011

A piece of iron wire weighs 2.225g. It is dissolved in acid, which oxidizes the iron to iron(II), and made up to 250 mL. A 25mL sample required 31.0 mL of a 0.0185mol/L solution of potassium dichromate. Calculate the percentage of iron in the wire.

asked by jerry on November 10, 2008

A piece of iron wire weighs 2.225g. It is dissolved in acid, which oxidizes the iron to iron(II), and made up to 250 mL. A 25mL sample required 31.0 mL of a 0.0185mol/L solution of potassium dichromate. Calculate the percentage of iron in the wire.

asked by Farah on January 2, 2011

Find the independent clauses and the dependent clauses.Write wether it is complex or compound-complex 1)Mr and Mrs Johnson play golf(ind) when the weather is warm.(dep)complex 2)What I would like is a vacation. independent,complex 3)Alicia works at the

asked by joe on April 30, 2012
96. Chemistry

Iron is obtained from iron ore according to the following reaction: Fe2O3+CO---> Fe+CO2 (unbalanced). a. Assuming the blast furnace is 90.0% efficient in recovering the iron, what is the actual mass of iron obtainable from a ton of ore? b. What is

asked by K on March 6, 2011
97. chem

In an experiment 4.0 g of ferrous ammonium sulphate, FeSO4.(NH4)2SO4.6H2O, is used. Since the oxalate in in excess, calculate the theoretical yield of the iron complex?

asked by Anonymous on November 16, 2011
98. Biology

4.0 g of ferrous ammmonium sulphate, FeSO4(NH4)2SO4 6H2O, is used. Since the oxalate is in excess, calculate the theoretical yield of the iron complex. Please help with this question. Thank you.

asked by Serena on November 16, 2010
99. chemistry

4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex

asked by Anonymous on November 3, 2009
100. chemistry

4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex.

asked by Anonymous on November 16, 2011