1. chemistry

    I got the molecular formula is NaHCO3+H2SO4=Na2SO4+CO2+H2CO3 and i got the total ionic formula is NaOH+H2CO2(aq)= Na2CO3 + HOH but i am having trouble finding the net ionic formula can you please help me thank you

    asked by ashley on May 13, 2014
  2. Chemistry-Repost

    Write formula equations and net ionic equations for the hydrolysis of sodium carbonate in water. Responses Chemistry - DrBob222, Friday, April 24, 2009 at 10:50pm The hydrolysis of Na2CO3 ends us as the hydrolysis of the carbonate ion. The molecular

    asked by anonymous on April 25, 2009
  3. Chem

    A beaker containing 25.0 mL of 0.360 M H2SO4 spills on the counter. How much baking soda, NaHCO3, will be needed to neutralize the acid? H2SO4 (aq) + 2 NaHCO3 (s) -> Na2SO4 (aq) + 2 H2CO3 (l) GIVEN: - I've converted 25.0 mL to 0.025 L H2SO4. - 0.360 M

    asked by Joyce on May 11, 2016
  4. Chemistry

    When we mix NaOH and H2SO4 we get the equation OH-(aq) + H+(aq) --> H2O(l) and if we mix H2CO3 and NaOH we get the equation 2OH-(aq) + H2CO3 --> 2H2O(l) + CO3-2(aq) Why aren't the two equations the same? ie only one mol of NaOH reacts in the first equation

    asked by Fiona on May 12, 2007
  5. Chem 22

    balance molecular formula, total ionic formula and net ionic formula of Sr(NO3)2 + Al2(SO4)3. Thank you

    asked by Ivy on December 2, 2010
  6. Chem 22

    balance molecular formula, total ionic formula and net ionic formula of Sr(NO3)2 + Al2(SO4)3. Thank you

    asked by Ivy on December 2, 2010
  7. Chemistry

    For H2SO4 + 2NaOH = 2H2O + Na2SO4 n(H2SO4) = 9.65g/98g/mol = 0.098 n(NaOH) = 6.10g/40g/mol = 0.15 mol 1 mole of H2SO4 is = to 1 mole of Na2SO4. H2SO4 yields 0.098 mol of Na2SO4. 2 moles of NaOH is = to 1 mole of Na2SO4. NaOH yields 0.076 moles of Na2SO4.

    asked by Anonymous on April 5, 2018
  8. AP Chem

    Complete and balance each of the following molecular equations, including phase labels, if a reaction occurs. Then write the net ionic equation. If no reaction occurs, write NR after the arrow. H2CO3(aq)+Sr(OH)2(aq) -> this is what I put but I think its

    asked by Anna on November 3, 2008
  9. chemistry

    What is the concentration of NaOH? using this solution (0.04756 M (i think its stand for Molarity) H2SO4) what is the concentration of NaOH in 10.00 ml of a solution, titrate to an end point using 24.22 ml of acid? formula that was given is (H2SO4 + 2NaOH

    asked by star on March 16, 2012
  10. Chemistry

    the formula H2O2 is an example of 1.molecular formula 2. an empirical formula 3.an ionic formula 4.an organic formula

    asked by tia on November 28, 2010
  11. Chemistry

    What is the net ionic equation when H2SO4 is neutralized by NaOH in aqueous solution? Write the molecular equation. H2SO4 + 2NaOH ==> Na2SO4 + 2H2O Convert to ions. 2H^+ + SO4^= + 2Na^+ + 2 OH^- ==> 2Na^+ + SO4^= + 2H2O Now cancel those ions that appear on

    asked by Bob on February 17, 2007
  12. Chemistry

    I am to do an equilibrium constant lab and I am supposed to only find the Kc value. i have to find the equilibrium constant for NaHCO3 (s) NaOH (s) + CO2 (g) at 800K. The partial pressure in the bulb reads 420 kPa on the manometer, 1 gram of NaHCO3 was

    asked by Liz on August 7, 2014
  13. AP Chemistry

    Write the balanced molecular, complete ionic, and net ionic equations for each of the following acid-base reactions. (Type your answer using the format [NH4]+ for NH4+ and [Ni(CN)4]2- for Ni(CN)42-. Use the lowest possible coefficients.) (a) HClO4(aq) +

    asked by Rahul on September 24, 2011
  14. chem

    Does baking soda and vinegar have a complete ionic equation? HC2H3O2 (aq) + NaHCO3 ===> NaC2H3O2(aq) + H2CO3(aq)----->H2O(l)+CO2(g)+2H2O(l)

    asked by Lou on September 30, 2009
  15. chem

    Some sulfuric acid is spilled on a lab bench. It can be neutralized by sprinkling sodium bicarbonate on it and then mopping up the resultant solution. The sodium bicarbonate reacts with sulfuric acid as follows. 2 NaHCO3(s) + H2SO4(aq) --> Na2SO4(aq) + 2

    asked by hannah on December 11, 2010
  16. chemistry

    why is the formula written for an ionic compound such as NaCl the empirical formula,rather than a molecular formula?

    asked by caleb on April 27, 2008
  17. Chemistry

    In a silphuric acid (H2SO4)-Sodium Hydroxide (NaOH) acid-base titration, 17.3mL of 0.126M NaOH is needed to neutralize 25mL of H2SO4 of unknown concentration. What is the morality of the H2SO4 solution? H2SO4 (aq)+ NaOH (aq) = Na2SO4 (aq) + H2O (l)

    asked by Dawn on July 1, 2014
  18. Chemistry

    How do write a skeleton equation for this reaction? When heated, baking soda (sodium hydrogen carbonate) decomposes to form the products sodium carbonate, carbon dioxide, and water. Can someone please break it down so i can see how you got that ansewer?

    asked by Bryan on March 15, 2007
  19. 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
  20. Chemistry

    NaHCO3 + H2SO4 Na2SO4 + H2O + CO2 Use minimal integer numbers to balance the reaction. Include physical states in your answer.

    asked by Khin on March 22, 2010
  21. Chemistry II

    A 12.00 mL sample of sulfuric acid from an automobile battery requires 34.62 mL of 2.42 M sodium hydroxide solution for complete neutralization. What is the molarity of the sulfuric acid? H2SO4 + 2NaOH ==> Na2SO4 + 2H2O molarity NaOH x liters NaOH = mols

    asked by Jayd on April 25, 2007
  22. chemistry

    A 8.408 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 12.53 grams of CO2 and 3.849 grams of H2O are produced. In a separate experiment, the molar mass is found to be 118.1 g/mol. Determine the empirical

    asked by ALAN on February 19, 2017
  23. Chemistry

    How many milimetres of 0.114 M sulphuric acid solution provide the sulfuric acid required to react with the sodium hydroxide in 32.3 ml of 0.122 M NaOH according to the following equation? H2SO4 + 2 NAOH ---> Na2SO4 + 2 H20 A millimeter is a unit of

    asked by Cadi Almond on September 11, 2006
  24. Chemistry

    What is the molecular, ionic and net ionic formula for Acetic acid and sodium nitrate Molecular: Ionic: Net Ionic:

    asked by Melissa on September 20, 2010
  25. chemistry

    In the lab, 20.0 g of sodium hydroxide is added to a beaker giving it a total mass of 128.4 g. Sulfuric acid is added until all of the sodium hydroxide reacts. After heating, the total mass of the beaker and the dry compound is 142.3 g. Caculate the

    asked by jill on June 13, 2007
  26. chem

    lead (IV) hydroxide- ionic cation= +4 anion= -1 chemical formula= Pb(OH)4 Magnesium phosphate-ionic cation= +2 anion= -2 chemical formula= MgPO4 is ammonium sulfate molecular or ionic?

    asked by greeny on August 20, 2012
  27. Chemisty

    Consider the reaction of sulfuric acid, H2SO4, with sodium hydroxide, NaOH. H2SO4(aq) + 2 NaOH(aq) -> 2H2O(l) + Na2SO4(aq). Suppose a beaker contains 35.0mL of 0.175M H2SO4. How many moles of NaOH are needed to react completely with sulfuric acid? Thank

    asked by Mandy on October 22, 2014
  28. Chemistry

    Calculate the molarity of the H2SO4 solution if 17.45 mL of NaOH was necessary to reach the endpoint of titration. The molarity of the NaOH solution was 0.425 M and 26.30 mL of H2SO4 was added to the Erlenmeyer flask. H2SO4(aq) + 2 NaOH (aq) -----> Na2SO4

    asked by Audrey on February 25, 2017
  29. Chemistry

    When 25.3 mL of 0.100 M NaOH was reacted with 18.8 mL of H2SO4 of unknown molarity, the final solution was 0.029207 M in H2SO4. What is the molarity of the original H2SO4 solution? The equation for the reaction is: 2 NaOH + H2SO4 → Na2SO4 + 2 H2O

    asked by Haley on May 20, 2017
  30. CHEMISTRY

    The major component of vinegar is acetic acid CH3COOH. Which of the following reactions represents the balanced equation between acetic acid and sodium bicarbonate? a. CH3COOH(aq) + NaHCO3 a CH3COONa(aq) + CO2(g) + H2O(I) b. CH3COOH(aq) + 2 NaHCO3(aq) +

    asked by GRACE on May 9, 2010
  31. College-Chemistry

    NaOH(s)+ H2SO4(aq)=Na2SO4(aq) + H2O(l) Consider the unbalanced equation above.A 0.900 g sample of impure NaOH was dissolved in water and required 37.0 mL of 0.145 M H2SO4 solution to react with the NaOH in the sample. What was the mass percent of NaOH in

    asked by Tiffany on February 26, 2010
  32. Chemistry- DrBob222

    I completed this question like you told me to. Are the answers correct? Is my method for finding the molecular formula correct? 2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O. The relative molecular mass

    asked by Ava on October 22, 2013
  33. chem

    combustion analysis of a 285.7 mg sample of a hydrocarbon produces 880.8 mg of CO2 ans 405.7 mg of H2O. What is the empirical formula of the compound? a rough measurement of the molecular weight indicates it is a little over 100mg/mol. what is the

    asked by Braydon on February 7, 2011
  34. Chemistry

    A compound of B and H is found to have a mass percent composition of 81.1% Boron. Its empirical formula is B2H5. A mass spectrometry experiment tells us that the molecular mass is 53.3 g/mol. What is its molecular formula? So I feel like this is a trick

    asked by Nikela on March 23, 2016
  35. General Chemistry

    An unknown compound has a formula of CxHyOz. You burn 0.1523 g of the compound and isolate 0.3718 g of CO2, and 0.1522 g of H2O. What is the empirical formula of the compound? If the molar mass is 72.1 g/mol what is the molecular formula?

    asked by Jashmid on December 8, 2010
  36. Chemistry

    Please check my answers for the following questions. THANK YOU. 1) The empirical formula of a compound that is 25.9% nitrogen and 74.1% oxygen is.... ANSWER: N2O 2) empirical formula of a compound that consists of 4.80 grams of carbon, 1.20 grams of

    asked by anonymous on August 2, 2007
  37. Chemistry

    what is the 1. chemical equation 2. complete ionic equation 3. net ionic equation include phase of HCH3COO+NaHCO3 pls correct my answers 1. CH3COOH(aq)+NaHCO3(aq)+CH3COONa(aq)+H2O(l)+CO2(g) 2. CH3COOH(aq)+OH-(aq)=CH3COO-(aq)+H2O(l) 3. OH(aq)+CO2(g)

    asked by chemdummy on October 8, 2012
  38. Chemistry

    i asked this question earlier and thanks to dr bob i got the empirical formula. which is C6H3O2. I need help finding the molar mass to get the molecular formula. Terephthalic acid is an important chemical used in the manufacture of polyesters and

    asked by sean P. on April 25, 2010
  39. chem

    could anyone tell me why the molecular formula of agas is not always the same as the empirical formula tnx It may be a dimer or a trimer. For example, CH is the empirical formula for acetylene but the molecular formula is HC(triple bond)CH or C2H2.

    asked by bex on February 3, 2007
  40. chem

    The molecular formula is: Na(s)+ H2O(l)---->NaOH(aq)+H2(g) This is showing a single displacement reaction.I am not sure how to show the complete ionic equation, this is what I have so far: Na+(s)+ H+ H+O2-(l)---->Na+OH-(aq)+H2+(g) Is this how you show it?

    asked by Lenny on April 21, 2009
  41. Chemistry help

    NaOH+H2SO4-> H2o+Na2SO4? How many moles of NaOH required to neutralize 1 mole H2SO4?

    asked by Lee************** on April 14, 2012
  42. Chemistry

    NaOH+H2SO4-> H2o+Na2SO4? How many moles of NaOH required to neutralize 1 mole H2SO4?

    asked by Lee on April 12, 2012
  43. Chemistry

    The ionic compund sometimes called yellow uranium is used to produce colored glazes for ceramics. It is 7.252% sodium, 75.084% uranium, and 17.664% oxygen a. What is the empirical formula for this compound? b. This compound has a molecular mass of 1268.06

    asked by Maria on November 3, 2014
  44. chemistry

    What is the molarity of a sulfuric acid solution if 30.00mL of H2SO4 is required to neutralize 0.840g of sodium hydrogen carbonate? H2SO4(aq) + NaHCO3(aq) → Na2SO4(aq) + H2O(l)+ CO 2(aq)

    asked by shane on December 4, 2012
  45. chemistry

    I need to know if I have th right molecular formula for Sorbito 39.56g C 7.75g H 52.7g O Empirical Formula is CH2O 30.026 amu how I how calculate the molecular mass and how I figure out the melecular formula? please help

    asked by Joshua on October 28, 2008
  46. chemistry

    A compound is found to be 51.39% carbon, 8.64% hydrogen, and 39.97% nitrogen. It has a molecular molar mass of 140.22 g/mol. (This question requires one to find the empirical formula to end up with the final answer in molecular formula) A. C10H14N2 B.

    asked by spartan on January 10, 2019
  47. chemistry

    Determining a Molecular Formula from an Empirical Formula 1. A compund has an experimental molar mass of 78g/mol. Its empirical formula is CH. What is its molecular formula?

    asked by jaz on March 24, 2009
  48. chemistry

    Determining a Molecular Formula from an Empirical Formula 1. A compund has an experimental molar mass of 78g/mol. Its empirical formula is CH. What is its molecular formula?

    asked by chrissy on March 24, 2009
  49. chemisrty

    The ionic compound sometimes called uranium yellow is used to produce colored glazes for ceramics. It is 7.252% sodium, 75.084% uranium, and 17.664% oxygen. What is the empirical formula for this compound? This compound has a molecular mass of 1268.06

    asked by tash on November 10, 2014
  50. chem

    AgNO3+NaOH-->AgOH+NaNO3 give me molecular , total ionic and net ionic???"

    asked by julia on November 9, 2010
  51. chemistry

    why is the molecular formula of oide of arsenic in its gaseous state is not neccessarialy the same as its empirical formula what does this mean and how do i do it Molecules are known to dimerize or trimerize. We actually don't know what the molecular

    asked by donald on January 30, 2007
  52. AP Chemistry

    A 2.5 gram sample of a hydrocarbon containing C, H, N, O is combusted in excess oxygen. The nitrogen compounds that are formed are treated to convert all of N to N2. The gases are passed through a CaCl2 drying tube which weighs 1.00 gram initially and 3.16

    asked by Kim on April 24, 2011
  53. Chemsitry

    A mixture of 10.00 mL of H2SO4 and 30.00 mL of HCl required 20.00 mL of 2.500 M NaOH for complete reaction. When 30.00 mL of H2SO4 and 10.00 mL of HCl were used, 28.00 mL of 2.500 M NaOH were required. What were the concentrations of the acids? [Both were

    asked by Anonymous on October 11, 2015
  54. Chemistry

    How do I do these? 1. Balance the equation for the reaction between zinc and hydrochloric acid. Zn + HCl ZnCl2 + H2 2. Balance the equation for the reaction between iron (steel wool) and oxygen (water). Fe + O2 Fe2O3 3. Balance the equation for the

    asked by IWouldAlwaysOpenUpTheDoor on December 23, 2017
  55. chemistry

    What mass of sodium hydroxide pellets must be poured into a waste drum containing 20.0 L o 3.0 mol/L sulphuric acid to completely neutralize the waste acid solution? Write a balanced chemical equation for this reaction. okay, so here is the work I already

    asked by julie on December 15, 2014
  56. chemistry

    A compound has the following composition. C 54.5%, H 9.10% and 0 36.4% its molecular weight is 88.10. Determine its empirical formula and molecular formula. Take 100 g sample. That gives you 54.5 g C, 9.10 g H and 36.4 g O. Now convert those grams to mols.

    asked by Brooke on June 24, 2007
  57. chemistry

    Criticize the following statements. 1. In an ionic compound, the number of cations is always equal to the number of anions. [Is it ok to say 'not always'?] 2. The molecular formula for strontium bromide is SrBr(sub 2) [what's wrong wih this?] 3. The mass

    asked by Chris on September 25, 2006
  58. CHEMISTRY

    list three differences between molecular and ionic compounds, and explain how they relate to the differences in bond types.....how do i relate to the differences in bond types? List the differences and we'll talk about how they relate to the bond type. 1.

    asked by INEEDHELP!!! on December 6, 2006
  59. Chemistry

    I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40 percent nitrogen. Its

    asked by Matthew on February 20, 2012
  60. Chemistry

    I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40 percent nitrogen. Its

    asked by Matthew on February 20, 2012
  61. 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
  62. Chemistry (Check)

    True or False The empirical formula of a compound is always the same as the molecular compound. My Answear: True The empirical formula for acetylene is CH. The molecular formula is C2H2. Another example: The empirical formula for glucose is CH2O. The

    asked by Bryan on February 4, 2007
  63. chemistry

    A 43 mL sample of a solution of sulfuric acid is neutralized by 24 mL of a 0.053 M sodium hydroxide solution. Calculate the molarity of the sulfuric acid solution. Answer in units of mol/L. Here is my work so far. I thought I have successfully solved the

    asked by Big Boy on April 4, 2019
  64. Chemistry- Empirical Formula

    Aniline, consists of C, H, and N. Combustion of such compounds yields CO2, H2O, and N2. If the combustion of 9.71 mg of aniline yields 6.63 mg H2O and 1.46 mb N2, what is the empirical formula? What is the molecular formula of a compound with the molecular

    asked by Akira on April 19, 2010
  65. Chemistry

    Calculate the empirical formula and molecular formula of a compound that contains only carbon, oxygen and hydrogen and has a molecular mass of approximately 90. g/mol. Upon combustion of 12.0g of the compund with an excess of oxygen, the yield was 1.2 g of

    asked by Anonymous on April 22, 2010
  66. AP CHEMISTRY

    I really need this please!!!!!!! : write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s) NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the Equilibrium

    asked by DAN on March 19, 2012
  67. AP CHEMISTRY

    I really need this please!!!!!!! : write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s) NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the Equilibrium

    asked by DAN on March 19, 2012
  68. Chemistry

    If you divide the molar mass of a compound by the empirical formula mass, what is the result? That division should be VERY close to a whole number. Usually, 0.9 to 1.1 or 1.9 to 2.1 (all depending upon the accuracy and precision of experimental data). That

    asked by Chris on February 4, 2007
  69. chemistry

    In the course of research, a chemist isolates a new compound with an empirical formula C3H3O2. 4.97 g of the compound when dissolved in 100. g of water produces a solution with a freezing point of −0.325°C. What is the molecular formula of the compound?

    asked by Diana on September 8, 2010
  70. chemistry

    How many mL of 0.40M NaOH are need to neutralize 30.0 mL of 0.50 M H2SO4 according to the following reaction. 2NaOH(aq) + H2SO4 (aq)----Na2SO4 (aq) + 2H2O(l)

    asked by Sara on March 20, 2013
  71. chemistry

    what is the excess reactant of H2SO4+2NaOH->Na2SO4+2H2O H2SO4: NaOH: n=? n=? c=0.025M c=0.030M v=0.4L v=0.4

    asked by lill on October 23, 2014
  72. Chemistry re-post URGENT

    Chemical analysis reveals capsaicin to contain 71.0% of carbon, 8.60% hydrogen, 15.8% oxygen and 4.60% nitrogen. a) Determine the empirical formula of capsaicin b) Each molecule contains one atom of nitrogen. What is the molecular formula of capsaicin? I

    asked by Marty on October 22, 2007
  73. Chemistry

    Chemical analysis reveals capsaicin to contain 71.0% of carbon, 8.60% hydrogen, 15.8% oxygen and 4.60% nitrogen. a) Determine the empirical formula of capsaicin b) Each molecule contains one atom of nitrogen. What is the molecular formula of capsaicin? I

    asked by Marty on October 22, 2007
  74. chemistry

    analysis of a mixture of carbonate and bicarbonate: I did an experiment where 2.306g of unknown was diluted with distilled water to 250ml. Then 3 25mL samples of this unknown were titrated with .0663 M HCl and end point volumes were: 41.12mL, 41.00mL and

    asked by martini on September 25, 2013
  75. chemistry

    How many milliliter of 0.150 M H2SO4 (sulfuric acid) are required to react with 1.87 g of sodium hydrogen carbonate, NaHCO3, according to the following equation? H2SO4 + 2NaHCO3 --> Na2SO4 + 2H2O + 2CO2 dont understand this am i suppose to change 1.87 into

    asked by Henry on July 23, 2011
  76. Chemistry

    Hi Please help verify my answer to the following question: 0.500g of pure phosphorous was burned in excess pure oxygen to give a product that has a mass of 1.145 g. What is the empirical formula of the resulting compound? By the use of a mass spectrometer

    asked by Helpme on October 15, 2011
  77. chemistry

    I need help finding the net and total ionic for this reation. i know the steps but i keep getting the wrong answer. Al2(SO4)3 (aq) + 6 NaOH (aq) ----> 2 Al(OH)3 (s) +3 Na2SO4 (aq) Category

    asked by jake on January 20, 2010
  78. 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
  79. Chemistry

    Molecular, ionic, and net ionic equations for ammonium chloride + potassium sulfate. Also what is the observation. Is it 2NH2Cl + Na2SO4 = (NH4)2SO4 + 2NaCl???? Please help!

    asked by Tyler on October 13, 2014
  80. biology

    suppose 23mL of NaOH was required. How much Carbonic Acid was neutralized? 1L of .01 NaOH contains ____ mol NaOH? lmL of .01 NaOH contains _____mol NaOH? 23mL of .01 NaOH contains _____ mol NaOH? 2 mol of NaOH react with 1 mol H2CO3 2.3 x 10^-4 mol of NaOH

    asked by Anonymous on October 5, 2010
  81. Chemistry

    Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the equilibrium equation CO2(g) CO2(aq) K=0.032 The acid dissociation constants listed in most standard reference texts for carbonic acid

    asked by helllp on April 7, 2013
  82. Chemistry

    In a titration HCl and NaOH have a 1:1 ratio. Can you still use the formula M1V1 = M2V2 to find the molarity of the NaOH base if we change the acid to sulfuric H2SO4?

    asked by Jimmy on March 4, 2010
  83. CHEMISTRY

    A compound which contains hydrogen, oxygen, carbon only has molar mass of about 85 g/mol. When 0.43 g of the compound is burned in excess of oxyfen, 1.10 g of CO2 and 0.45 g of H2O are formed. Find the molecular formula and the empirical formula of the

    asked by Clive Lodnyx on July 18, 2016
  84. Chemistry grade 11

    An organic compound is composed of C, H and O. A 0.1005 g sample of this is combusted, producing 0.2829 g CO2 and 0.1159 g of H2O. What is the empirical formula of this compound? If the compound has a molar mass of 14 g/mol. What is the molecular formula?

    asked by Sim on January 10, 2015
  85. chemistry

    In 1934, Edward A. Doisy of Washington Univeristy extracted 1361 kg og hog ovaries to isolate a few milligrams of a potent female hormone. Doisy burned 5.00 mg of this precious sample in oxygen and found that 14.54 mg of CO2 and 3.97 mg of H2O were

    asked by gloria on September 27, 2012
  86. Finding the Molecular Formula

    A certain compound containing only carbon and hydrogen was found to have a vapor density of 2.550 g/L at 100 degrees C and 760 mm Hg. If the empirical formula of this compound is CH, what is the molecular formula of this compound? I had some ideas as to

    asked by Amy on December 8, 2012
  87. General Chemistry

    Answer Check Please... A compund contains only hydrogen and nitrogen and is 12.6% hydrogen by mass. A gaseous sample of the compound has desity of 0.925g/L at 690 torr and 110 degrees Celsius. What is the molecular formula of the compound? My Empirical

    asked by Kathy on September 5, 2011
  88. chemistry

    Determine the number of moles of each specified atom or ion in the given samples of the following compounds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.) a. O atom in 3.161x10^21 molecules of CO2 b. C atom in

    asked by bre bre on March 8, 2009
  89. chemistry need help

    Determine the number of moles of each specified atom or ion in the given samples of the following compounds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.) a. O atom in 3.161x10^21 molecules of CO2 b. C atom in

    asked by bre bre on March 10, 2009
  90. Chemistry

    If mixing baking soda, (NaHCO3) with vinegar (CH3COOH) to generate carbonic acid (H2CO3), which breaks up into water and carbon dioxide gas) and sodium acetate (NaCH3COO), would the equation be: NaHCO3 + CH3COOH yields H2CO3 + NaCH3COO

    asked by Pedro on February 3, 2011
  91. chemistry

    a compound with the molecular weight of 276 grams was determined to be 39.10% carbon, 8.77% hydrogen, and 52.13% oxygen. what is the empiricial formula and the molecular formula for the compound? i do not know where to start! i worked it out and i got

    asked by shelly on November 28, 2009
  92. Chemistry

    Calculate the molarity of 25.00ml H2SO4 solution if 32.48ml of 0.1068M NaOH is required to titrate? Balanced equation is H2SO4(aq)+2NaOH(aq)=Na2SO4(aq)+2 H2O (l)

    asked by Jake on October 22, 2014
  93. Chemistry

    In a experiment to determine the molecular weight and the Ka for ascorbic acid (vit. c.) a student dissolved 1.3713g of the monoprotic acid in water to make 50 mL of solution. The pH was monitored throughout the titration. The equivalence point was reached

    asked by Tri on May 19, 2007
  94. General Chemistry

    Starting out with 50 mL of 0.20 M NaHCO3, calculate how many mL of 0.50 M NaOH solution to add to make 100 mL of approximately 0.10 M (total) buffer solution with a pH of 10.35. By adding NaOH, some of the NaHCO3 gets converted to the conjugate Na2CO3.

    asked by Lucy on April 3, 2012
  95. chemistry

    The molecular formula of 2.68g hydrated sodium sulphate is Na2SO4.nH2O.If the mass loss on heating is 1.26g then calculate the value of n.

    asked by Farha on January 18, 2017
  96. chemistry

    An unknown sample with a molecular mass of 180.0g is analyzed to yield 40% C, 6.7% H, and 53.3% O. What is the empirical formula and the molecular formula of this compound?

    asked by z on June 20, 2012
  97. Chemistry

    1.0L of aqueous solution in which [H2CO3]=[HCO3^-]=0.10M and has [H^+]=4.2E-7. What is the concentration of [H^+] ofter 0.005 mole of NaOH has been added? H2CO3 ==> H^+ + HCO3^- k1 = (H^+)(HCO3^-)/(H2CO3) I don't know if you are supposed to calculate or to

    asked by Vic on August 7, 2007
  98. Chemistry

    Naoh+h2so4--------h20 +na2so4 Now the question is what number of moles of naoh require to neutralize 1 mole of h2sor.

    asked by Anonymous on October 20, 2011
  99. chemistry

    Which is the molecular formula of a compound with the empirical formula BCH3 and a molecular mass of 103.38g/mole?

    asked by Taylee on November 12, 2015
  100. Chemistry

    Given the Empirical formula: C6H7N, and a molecular mass of 372.52 g/mol, How do I find the MOLECULAR formula for the compound?

    asked by Christina on September 18, 2011

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