1. chem

    an -ol suffix indicates that an -OH group has been added to a hydrocarbon. Which formula represents 1,2-ethanediol? 1 C2H4(OH)2 2 C3H5(OH)3 3 Ca(OH)2 4 Co(OH)3

    asked by lisa on May 22, 2011
  2. chemistry

    complete combustion of a 0.0100mol sample of hydrocarbon, CxHy, gives 1.344 L of CO2 at STP and 0.720 g of H2O. a. what is the molecular formula of hydrocarbon? b. what is the empirical formula of hydrocarbon?..

    asked by SHY on November 28, 2011
  3. Chemistry

    A liquid hydrocarbon (Cx Hy) is found to be 16.37% H by mass. A 1.158-g vaporized sample of the hydrocarbon has a 358 mL volume at 71.0 C and 749 mmHg. what is the molecular formula for this hydrocarbon?

    asked by Katrina on June 21, 2011
  4. chemistry

    a flask with a volume of 267.5 mL contains a few milliliters of a volatile hydrocarbon. after vaporizing the gas at 100 degrees C, the flask is weighed and found to contain 0.728 grams of hydrocarbon vapor at 755 mmHg. a separate combustion analysis

    asked by Rachel on March 14, 2011
  5. Chemisty!

    a flask with a volume of 267.5 mL contains a few milliliters of a volatile hydrocarbon. after vaporizing the gas at 100 degrees C, the flask is weighed and found to contain 0.728 grams of hydrocarbon vapor at 755 mmHg. a separate combustion analysis

    asked by Rachel on March 14, 2011
  6. Chemistry

    a hydrocarbon is burnt completely in excess oxygen. it is found that 1.00g of the hydrocarbon gives 2.93g carbon dioxide and 1.80g water. find the empirical formula of the hydrocarbon (H=1,C=12,O=16)

    asked by Henry on May 10, 2018
  7. chemistry

    in an experiment a sample of hydrocarbon was analyzed. The sample contained6 g of carbon and 1.344 g Hydrogen. a) whats the empirical formula? the density of hydrocarbon at 25 C and 1.09 atm is 1.96 g/L b.) whats the molar mass of the hydrocarbon? c) whats

    asked by hilde on March 10, 2010
  8. Chemistry

    A 1.24-g sample of a hydrocarbon, when completely burned in an excess of O2(g), yields 4.04 g CO2 and 1.24 g H2O Draw a plausible structural formula for the hydrocarbon molecule. I think I understand how to get it to an empirical formula but I don't know

    asked by Jess on April 15, 2019
  9. Chem

    Complete combustion of 8.30 g of a hydrocarbon produced 26.7 g of CO2 and 9.10 g of H2O. What is the empirical formula for the hydrocarbon? My Work: First I tried to find the Amount of C and H in the product... Which I got 1 Mole of Carbon and 2 moles of

    asked by Dan on October 21, 2015
  10. chemistry

    Combustion analysis of a hydrocarbon produced 33.01 g {\rm CO}_2 and 27.04 g {\rm H}_2{\rm O}. Calculate the empirical formula of the hydrocarbon. Express your answer as a chemical formula.

    asked by david on March 17, 2014
  11. medical terminology

    what is the prefix for the following words: three equal, same as absence of, without Also need some suffix help: cut into, make an incision (suffix) excessive or abnormal increase in (suffix) swelling or tumor (suffix) This is homework and I need some help

    asked by Kimberly on October 30, 2008
  12. Grammar and Composition

    please check: divide each of the following words into its prefix, root, and suffix. some words may not have a prefix or a suffix. 1. reporter: re-prefix port-root er-suffix 2. overrule: over?-prefix rule?-root 3. contraction: con-prefix tract-root

    asked by y912f on October 15, 2009
  13. Grammar and Composition

    please check: divide each of the following words into its prefix, root, and suffix. some words may not have a prefix or a suffix. 1. reporter: re-prefix port-root er-suffix 2. overrule: over?-prefix rule?-root 3. contraction: con-prefix tract-root

    asked by y912f on October 15, 2009
  14. chem

    When 3.517 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 11.59 grams of CO2 and 3.164 grams of H2O were produced. In a separate experiment, the molar mass of the compound was found to be 40.06 g/mol. Determine the empirical

    asked by jillian on February 19, 2017
  15. Chemistry

    An unknown gaseous hydrocarbon contains 85.63 % carbon. If its density is 0.488 g/L at 0.355 atm and 100°C, what is the molecular formula of the gas? I can't figure this out. By assuming the total mass to be 100g, I get 85.63g C and 14.37g H which I then

    asked by Michael on March 18, 2015
  16. chemistry

    a hydrocarbon was burnt completely and the products were bubbled into excess of Ca(OH)2 solution. The resulting mixture was filtered, and the residue dried and weighed. The mass of the hydrocarbon was found to be 10.00g. In a separate experiment, the same

    asked by kandace on June 19, 2016
  17. chemistry

    Complete combustion of 8.80 g of a hydrocarbon produced 27.1 g of CO2 and 12.5 g of H2O. What is the empirical formula for the hydrocarbon?

    asked by Anonymous on October 11, 2013
  18. chemistry

    Complete combustion of 4.20 g of a hydrocarbon produced 13.4 g of CO2 and 4.81 g of H2O. What is the empirical formula for the hydrocarbon?

    asked by Alex on February 13, 2017
  19. Chemistry

    Complete combustion of 7.00 g of a hydrocarbon produced 21.4 g of CO2 and 10.2 g of H2O. What is the empirical formula for the hydrocarbon?

    asked by Stephanie on June 6, 2012
  20. chemistry

    Complete combustion of 4.80 g of a hydrocarbon produced 15.6 g of CO2 and 4.80 g of H2O. What is the empirical formula for the hydrocarbon?

    asked by college chem on September 19, 2013
  21. Chemistry

    Complete combustion of 8.00 g of hydrocarbon produced 26.0g of CO2 and 7.99g of H2O. What is the empirical formula for the hydrocarbon?

    asked by Jerry on September 18, 2011
  22. Chemistry

    Hydrocarbon burn in excess oxygen yields 4.4g of carbon(iv)oxide and 2 of 7g of water. Find the empirical formula of hydrocarbon

    asked by Prudent on November 16, 2015
  23. Treacher girls scholl

    A hydrocarbon is burnt completely in air to form 13.2g of carbon dioxide gas and 7.2g of water. What is the molecular formula of the hydrocarbon?

    asked by Esh on March 28, 2011
  24. Chemistry

    I have two questions: 1. Which group in the periodic table reacts with H2 to form compounds with the general formula MH2? A. Group 1A B. Group 2A C. Group 3A D. Group 4A E. Group 5A 2.Which reacts with F2 to form compounds with the general formula MF2? A.

    asked by Londy on April 20, 2007
  25. chemistry

    A sample of a saturated hydrocarbon is placed in a 1.0L vessel at 107oC. The pressure of the sample at these conditions is .40 atm. A stoichiometrically equivalent amount of oxygen is added to the vessel and the mixture is combusted. Following combustion,

    asked by bill on May 22, 2012
  26. chemistry

    combustion analysis of a hydrocarbon produced: 33.01 g CO2 and 13.51 g H2O Calculate the empirical formula of the Hydrocarbon. I got CH5 but that doesn't seem right? how do i do this problem?

    asked by ALISON on September 11, 2011
  27. science

    I need to produce a related structure of the molecular features of carboxyli acid, size hydrocarbon group on ester and distance between oxygeeb atom joined to the ring and -oh group of the carboxylic acid? I have got no ideas on where to start. Start by

    asked by rain on July 13, 2007
  28. Chemistry

    When 1.578 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 4.951 grams of CO2 and 2.027 grams of H2O were produced. In a separate experiment, the molar mass of the compound was found to be 56.11 g/mol. Determine the empirical

    asked by Natalie on February 18, 2018
  29. chem 1411

    A combustion analysis of a 0.00134g sample (CxHy) of a hydrocarbon yields 0.00375g of CO2 and 0.00164g of H2O. What is the empirical formula of the hydrocarbon?

    asked by JACI WINLOW on October 18, 2016
  30. Organic Chemistry

    "Cabbage leaves are coated with a hydrocarbon of molecular formula C29H60. What purpose might this hydrocarbon coating serve?" This is a question from a textbook. Anything helps!!

    asked by ryancon on February 14, 2019
  31. Science Chemistry

    The elementary analysis of 22 g hydrocarbon sample results in 18 g C and 4 g H. a) Choose the correct chemical formula of the hydrocarbon: i) CH4 ii) C2H4 iii) C3H8 b) What is the amount of CO2 in grams formed by the total combustion of hydrocarbon? Assume

    asked by karem on December 22, 2016
  32. Chemistry

    10cm^3 of aa hydrocarbon was completely combusted in 200cm^3 of O2. It was found that there was 20cm^3 of O2 remaining and the volume of CO2 produced was 120cm^3. Determine the formula of the hydrocarbon.

    asked by Nadya on May 5, 2013
  33. Chemistry

    10cm^3 of aa hydrocarbon was completely combusted in 200cm^3 of O2. It was found that there was 20cm^3 of O2 remaining and the volume of CO2 produced was 120cm^3. Determine the formula of the hydrocarbon.

    asked by Nadya on May 5, 2013
  34. Science

    10. ALTERNATIVE B The elementary analysis of 22 g hydrocarbon sample results in 18 g C and 4 g H. a) Choose the correct chemical formula of the hydrocarbon: i) CH4 ii) C2H4 iii) C3H8 b) What is the amount of CO2 in grams formed by the total combustion of

    asked by karem on December 21, 2016
  35. Chemistry HELP

    Complete combustion of 3.30 g of a hydrocarbon produced 10.2 g of CO2 and 4.68 g of H2O. What is the empirical formula for the hydrocarbon? I did the calculation and the ratio comes out to C: 1 H: 2.24 So I thought the answer is CH2 but apparently its

    asked by Alz on February 9, 2014
  36. Grammar and Composition

    please check my answers: identify the following as a prefix, root word, or suffix. give the meaning for each 1. re : prefix : back, again 2. pathy : root : feeling 3. dis : prefix : opposite of 4. luc : root : light 5. dom : suffix : dignity, office,

    asked by y912f on October 15, 2009
  37. Medical Terminology

    The patient went into cardiac arrest. The (-ac) portion of the word is a/an A. noun suffix B. plural suffix C. combining form D. adjective suffix

    asked by Brenda on March 26, 2010
  38. Chemistry

    A .7178 g sample of a hydrocarbon occupies a volume of 390.7 mL at 65C and 99.2kpa. When the sample is burned in excess oxygen, 2.4267 g CO2 and .4967g H2O are obtained. What is the molecular formula of the hydrocarbon? Write a plausible structural formula

    asked by Lisa on September 28, 2014
  39. Chemistry

    Complete combustion of 7.70 g of a hydrocarbon produced 23.7 g of CO2 and 10.9 of H2O. What is the empirical formula of the hydrocarbon? I first calculated the moles of both the carbon dioxide and the water, but I have no idea where to go from there. Any

    asked by Student on January 27, 2011
  40. English please check my answer

    Please see if I have the correct answer thank you The patient went into cardiac arrest. The- (iac) portion of the word is A. noun suffix B. plural suffix C. combining form D. adjective suffix My choice is B

    asked by Dakotah on March 20, 2008
  41. Chemistry

    A hydrocarbon gas burned completely in O2 to give CO2 and H2O.It was found that one volume of hydrocarbon gas at STP produced two volumes of CO2 and three volumes of steam corrected at the same temperature and pressure. What is the emperical formula of

    asked by Elie on August 6, 2012
  42. AP Chemistry

    a 5.15g sample of a hydrocarbon is burned in oxygen, producing 15.6g of carbon dioxide and 8.45g of water. Assuming an excess of oxygen, what is the empirical formula of the hydrocarbon?

    asked by Ariday on September 13, 2011
  43. Chemistry

    A hydrocarbon gas burned completely in O2 to give CO2 and H2O. It was found that 1volume of a hydrocarbon gas at STP produced 2volumes of CO2 and 3 volumes of steam at STP. What is the emperical formula of this gas? Please help me on how to work out the

    asked by Elie on August 6, 2012
  44. chemistry

    Consider a sample of a hydrocarbon (a compound consisting of only carbon and hydrogen) at 0.959 atm and 298 K. Upon combusting the entire sample in oxygen, you collect a mixture of gaseous carbon dioxide and water vapor at 0.755 atm and 375 K. This mixture

    asked by Jaxx on February 27, 2015
  45. Grammar and Composition

    please check: identify and label the following as a prefix, root word, or suffix. give the meaning of each. ed: suffix: past tense of a verb sion: suffix: condition or state of being macro: prefix: large, excessive retro: prefix: backwards ultra: prefix:

    asked by y912f on October 14, 2009
  46. AP Chemistry

    a 5.15g sample of a hydrocarbon is burned in oxygen, producing 15.6g of carbon dioxide and 8.45g of water. Assuming an excess of oxygen, what is the empirical formula of the hydrocarbon? how do i set this problem up and how do i solve it?

    asked by Ariday on September 13, 2011
  47. Chemistry

    One volume of a hydrocarbon require 3 volume of oxygen for complete combustion then formula for hydrocarbon

    asked by Anonymous on August 28, 2016
  48. college

    A patient went into cardiac arrest. The (-ac) portion of the word cardiac is a/an A. noun suffix B. plural suffix C. combining form D. adjective suffix I think it might be D but I'm not totally sure.

    asked by Nicole on August 5, 2010
  49. Chemistry

    Write the IUPAC name for straight-chain hydrocarbon with this formula: CH3CH2CH2CH2CH2CH2CH3 Write the IUPAC name for any branched-chain hydrocarbon with this formula:C9h20

    asked by Allison on April 29, 2012
  50. Chemistry

    When 1.63 g sample of an unknown hydrocarbon is completely burned in oxygen, 4.97 g of CO2 are produced. What is the percentage by mass of hydrogen in this hydrocarbon? THANK YOUU Found out the formula: 4CH+5O2--> 4CO2+2H2O then found out the moles of CH=

    asked by Alex on September 14, 2015
  51. Chemistry

    9. Complete combustion of a 0.20 mole sample of a hydrocarbon, CxHy, yields 0.80 mol of CO2 and 1.0 mol of H2O. What is the empirical formula for the hydrocarbon? A. C2H5 B. C4H5 C. C4H8 D. C4H10 E. C3H8 I have C4H8 Correct?

    asked by Trevor on September 29, 2008
  52. chemistry

    Combustion analysis, Empirical and Molecular formulas, help!? When 2.686 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 9.224 grams of CO2 and 1.511 grams of H2O were produced. In a separate experiment, the molar mass of the

    asked by Sazon on September 7, 2011
  53. Chemistry

    Sorry to bother again. I'm stuck in these two problems as well. 1. A 27.0 g smaple of an unknown hydrocarbon was burned in excess oxygen to form 88.0 g of carbon dioxide and 27.0 g of water. What iss a possible molecular formula of the hydrocarbon? 2. A

    asked by Anonymous on September 9, 2007
  54. chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C . Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by marc on February 4, 2008
  55. chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C. Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by Tom on May 3, 2008
  56. Chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C. Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by Anonymous on February 2, 2009
  57. language arts

    I am not sure about the prefix suffix and root of minute for the prefix i think it is min for suffix i think there is no suffix and root ute am i correct? Answer ASAP PLZ

    asked by emily on September 15, 2015
  58. chem

    a hydrocarbon has an empirical formula CH and a vapour density of 39. Determine its molecular formula. solution.................................................... CH=12+1 n=13 13n=39 =3

    asked by teegold on May 21, 2014
  59. reading

    What is the prefix, suffix, and root for slavery? No prefix Suffix-ery or ry? Root- slave Is my suffix correct, if yes what is the definition?

    asked by Lana on February 23, 2016
  60. chemistry

    thanks for helping me with the list. By checking the product's labels I'm finding many of the substances the problem now is that i found a product with hydrocarbon in it but I do not know how to figure out if its molecular mass is greater than 100g/mol

    asked by desperate on February 4, 2007
  61. Chemistry

    30 cubic-centimetre hydrocarbon requires 90 cubic-centimetre of oxygen for complete combustion and 60 cubic-centimetre of carbondioxide is formed .What is the formula of hydrocarbon?

    asked by NItesh Kumar on May 14, 2012
  62. English

    Which responses explain how affixes change the world guise to another part of speech? (Select all that apply.) A. Adding the prefix dis- and the suffix -ly creates the adverb disguisedly. B. Adding the prefix dis- and the suffix -ment creates the adjective

    asked by Brianna on October 15, 2018
  63. Chemistry

    0.717 g of a compound containing carbon, hydrogen, and oxygen is burned and found to produce 1.02 g CO2 and 0.624 g H2O. The molar mass of the compound is 124 g/mol. (a) Write a chemical equation for the combustion of this unknown hydrocarbon. (b)

    asked by Franklin on August 24, 2011
  64. IGCSE Chemistry

    Hydrocarbons A and B both contain 85.7 % carbon. Their molar masses are 42 and 84 respectively. a) Which elements does a hydrocarbon contain? b) Calculate the empirical formula of A and of B. c) Calculate the molecular formula of A and B. I solved a) and

    asked by Amir on December 25, 2011
  65. health

    what is the prefix,added combine and suffix for Distally and Proximally?

    asked by cynthia on February 26, 2010
  66. Grammar

    What is the prefix, root and suffix of the word "subscribe"? My Answer: prefix - sub root - scrib suffix - e Can the suffix be a single letter? What about the word "misused"? Please help!? Am I right?

    asked by Maria on June 9, 2012
  67. CHEMISTRY

    I've been trying to do this problem but I would get confused and stuck.. Consider a sample of a hydrocarbon at 0.959 atm and 298 K. Upon combustion the entire sample in oxygen, you collect a mixture of gaseous carbon dioxide and water vapor at 1.51 atm and

    asked by J on November 7, 2008
  68. Chemistry

    what is the formula for Aldehyde? an aldehyde is a substance containing the CHO group at the end of a hydrocarbon chain. There can be many different forms. One, for example, is C2H4O O  \\   C-R   |   H I hope this turns out

    asked by Marlene on December 8, 2006
  69. Chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C. Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by Kyle on February 3, 2009
  70. chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C . Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by Anonymous on February 7, 2008
  71. Chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C. Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by Lee on February 11, 2008
  72. Chemistry

    (5 pts) Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 60C. Pentanol is an alcohol ( a hydrocarbon with a "OH" group attached to one of it's

    asked by Synthia on May 2, 2011
  73. Chemistry

    (5 pts) Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 60C. Pentanol is an alcohol ( a hydrocarbon with a "OH" group attached to one of it's

    asked by Synthia on May 2, 2011
  74. Chemistry

    Indicate which elements can be used as potential semiconductors, and which ones can be used as potential dopants used to make n-type and p-type semiconductors by placing them in the corresponding bin. F, Al, As, Ge, I. p-type semiconductors can consist of:

    asked by CL on April 9, 2017
  75. Chemistry HELP!!!URGENT

    Indicate which elements can be used as potential semiconductors, and which ones can be used as potential dopants used to make n-type and p-type semiconductors by placing them in the corresponding bin. F, Al, As, Ge, I. p-type semiconductors can consist of:

    asked by Lil on April 13, 2017
  76. sentences and spelling

    Which one of the following words has the suffix -ing added correctly? A. Talking B. Hopeing C. Stoping D. Findding

    asked by stacy on April 24, 2015
  77. Chemistry

    A 0.1592g sample of a hydrocarbon upon combustion analysis produces 0.5008g CO2. Its molar mass is found in another experiment to be 70g mol. Determine the empirical formula, and its molecular formula. I completely messed up this question, and I don't know

    asked by Sarah on October 5, 2015
  78. ap chem

    an unknown gaseous hydrocarbon reacts with oxygen to form CO2 and H2O, DETERMINE HEAT OF FORMATION FOR THE HYDROCARBON. the density of the mixture of CO2 and H2O at 1 atm and 200 degree celsius is 0.751g /L and heat of reaction is equal to -2044.5 KJ /MOL

    asked by Rita on October 11, 2014
  79. reading

    What is the prefix,suffix,and root for neutral?The definition? My answer: Prefix-ne Suffix- no suffix Root- utral am i Definition-?? Not sure correct?

    asked by emily on September 15, 2015
  80. chemistry.

    What is the empirical formula of a hydrocarbon that contains 89,94 by mass?

    asked by peter on September 25, 2009
  81. Chemistry

    What is the empirical formula of a hydrocarbon that contains 89.94% C by mass?

    asked by Mark on September 18, 2011
  82. Chemistry

    What is the empirical formula of a hydrocarbon that contains 89.94% C by mass?

    asked by Mark on September 18, 2011
  83. Grammar and Composition

    continued from earlier post... deported: de-prefix port-root ed-suffix interruption: (need help) prefix: pre-prefix fix- root dissection: di-prefix sect: root ion: suffix postscript: post-prefix script- root implacable: im- prefix plac ?? - root able-

    asked by y912f on October 14, 2009
  84. chemistry

    i.Calculate the volume of carbon ivoxide given off at stp when 20gram of octane is burnt in excess air (c=12,1+=1 gmv of any gass is 22.4dm^3 at stp). ii. Deduce the formula of a hydrocarbon with general formula cnH2n-2 of its molar mass in 110.

    asked by lawrence on September 5, 2016
  85. Chemistry

    1C2H6+2O2 yields 3H2O + 2CO2 would this be the hydrocarbon butene? If I did this wrong, how would you correctly identify this hydrocarbon? Thanks for your help.

    asked by Tabetha on May 19, 2009
  86. chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C. Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by Anonymous on February 10, 2008
  87. chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C . Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by anonymous on February 11, 2008
  88. Chemistry

    Hexane is a hydrocarbon (a molecule containing only carbon and hydrogen) with a molecular weight of 86.18 g/mol, a density of 0.660 g/mL, and a boiling point of 69C. Pentanol is an alcohol (a hydrocarbon with a "OH" group attached to one of its carbons)

    asked by Sinead on January 19, 2009
  89. Dr. Bob

    a gaseous hydrocarbon reacts completely with oxygen gas to form carbon dioxide and water vapor. given the following data, determine (delta)HoF for hydrocarbon: (delta)Horxn=-2044.5kj/mol hydrocarbon (delta)HoF CO2= -393.5kj/mol (delta)HoF H2O = -242kj/mol

    asked by Kim on April 21, 2008
  90. English

    Is there a website that gives rules for suffix's? i.e. drop the "e" and add "ing"... I am trying to help my son finish a vocabulary list of words to combine with suffix's and don't remember all of the rules....

    asked by Diane on November 6, 2007
  91. Chem

    Which formula represents an unsaturated hydrocarbon? a. C3H6 b. C3H8 Is the answer B? Thanks! :)

    asked by Skye on January 6, 2013
  92. kim

    a gaseous hydrocarbon reacts completely with oxygen gas to form carbon dioxide and water vapor. given the following data, determine (delta)HoF for hydrocarbon: (delta)Horxn=-2044.5kj/mol hydrocarbon (delta)HoF CO2= -393.5kj/mol (delta)HoF H2O = -242kj/mol

    asked by chemistry on April 20, 2008
  93. language

    what is a suffix? and what is prefix? the queston is " which word has a suffix but no prefix A)uncomfortable B)comfortably C)discomfort thanks for your time.

    asked by george on May 9, 2010
  94. Grammar and Composition

    please check these: Divide each of the following words into its prefix, root, and suffix. some words may not have a prefix or a suffix. WORD misused subscribe distorted regression deported interruption prefix dissection postscript implacable PREFIX mis sub

    asked by y912f on October 14, 2009
  95. chemistry

    an unknown alcohol reacts with sodium salt but further tests show the compound to be an aliphatic hydrocarbon. what structural unit is probably present in the hydrocarbon?

    asked by jen on March 31, 2018
  96. chemistry

    an unknown alcohol reacts with sodium salt but further tests show the compound to be an aliphatic hydrocarbon. what structural unit is probably present in the hydrocarbon?

    asked by jen on March 24, 2018
  97. Chemistry

    0.717 g of a compound containing carbon, hydrogen, and oxygen is burned and found to produce 1.02 g CO2 and 0.624 g H2O. The molar mass of the compound is 124 g/mol. (a) Write a chemical equation for the combustion of this unknown hydrocarbon. (b)

    asked by Anonymous on August 24, 2011
  98. math

    can anyone help please, i need a simple formula for working out taxes.if i had any number i need to know what the base was before 16% tax was added. i know the formula if the tax was 17.5%,what ever the total is if you divide that by 47 then x that by 7

    asked by simon on April 15, 2007
  99. DrBob222 : need help with the problem

    An unknown compound, X, is though to have a carboxyl group with a pKa of 2.0 and another ionizable group with a pKa between 5 and 8. When 75 mL of 0.1M NaOH is added to 100 mL of a 0.1M solution of X at pH 2.0, the pH increases to 6.72. Calculate the pKa

    asked by ron on September 11, 2012
  100. chemistry

    a 47.7L sample of a gaseous hydrocarbon, measured at 1.00atm and 25degreesC is burned in excess oxygen, liberating 4.33X10^3 kJ of heat at a constant pressure. what is the identity of the hydrocarbon?

    asked by Ellie on June 21, 2010