1. Chemistry

    A 10.0000 g block of aluminum is heated and placed in a stream of oxygen gas, resulting in the formation of aluminum oxide on the surface of the block. The block is cooled and weighed and found to have a mass of 11.6471 g. The block is then placed in a

    asked by Dave on September 26, 2017
  2. Chemistry

    A 10.0000 g block of aluminum is heated and placed in a stream of oxygen gas, resulting in the formation of aluminum oxide on the surface of the block. The block is cooled and weighed and found to have a mass of 11.6471 g. The block is then placed in a

    asked by Dave on September 27, 2017
  3. Chemistry

    Please could you tell me if I am going in the right direction. I am trying to write molecular formula for As2O3 I make molecular mass 197.8 gas density 17.8 to 3 sig figs 2.0 x density of gas at STP / density of hydrogen 17.8/0.0899 = 396 to 3 figs How do

    asked by Lucy on January 28, 2007
  4. AP Chemistry

    An organic compound was synthesized and found to contain only C, H, N, O, and Cl. It was observed that when .150g sample of the compound was burned, it produced .138g of CO2 and .0566g of H2O. All the Nitrogen in a different .200g sample of the compound

    asked by Monique on September 15, 2009
  5. Chemistry

    4.12 grams of Zinc are placed in a crucible with 3.00 grams (excess) of Sulfur. when reaction is complete the product mass is 6.10 grams. What mass of Sulfur should be used in the simplest formula calculation? Find the empirical formula of Zinc Sulfide. My

    asked by Jakob on September 25, 2016
  6. 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
  7. Chemistry

    Boron has only two naturally occurring isotopes. The mass of boron-10 is 10.01294 amu and the mass of boron-11 is 11.00931 amu. Use the atomic mass of boron to calculate the relative abundance of boron-10. Atomic mass of boron is 10.81 How do I solve this?

    asked by Brittany on September 7, 2011
  8. 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
  9. Chemistry

    The steps to getting the answer. A certain metal oxide has the formula MO where M denotes the metal. A 39.46g sample of the compound is strongly heated in an atmosphere of hydrogen to remove oxygen as water molecules. At the end, 31.70g of the metal is

    asked by Amy~ on August 26, 2010
  10. ap chemistry

    Consider the specific heats CH2O(s) = 2.09 J/g ¡¤◦ C. CH2O(§¤) =4.18 J/g ¡¤◦ C. CH2O(g) = 2.03 J/g ¡¤◦ C. The heat of fusion for water is 334 J/g and the heat of vaporization for water is 2260 J/g. Calculate the amount of heat absorbed when

    asked by gabriella on October 22, 2013
  11. Chemistry

    A student calculates the empirical formula of a compound to be C1.5H3.5. Express this as a correct empirical formula.

    asked by Anonymous on January 14, 2016
  12. Chemistry

    Hi Im reposting incase my original post doesn't get read. Please see bottom for additional info that I need help getting verified. Many thanks Hi Please help verify my answer to the following question: 0.500g of pure phosphorous was burned in excess pure

    asked by Helpme on October 16, 2011
  13. science

    The mass of the empirical formula is 100g; the mass of the molecular formula is 200g. What is the value of n?

    asked by Anonymous on February 1, 2013
  14. science

    The mass of the empirical formula is 100g; the mass of the molecular formula is 200g. What is the value of n?

    asked by Anonymous on February 1, 2013
  15. Alpha decay

    Hi I am working on a question which discusses ununhexium atomic number 116 atom weight 292. This isotope undergoes 7 alpha decay reactions. I have calculated that after seven reactions the product would be 102 nobelium. I cannot understand how the atomic

    asked by Atom ant on January 17, 2007
  16. Chemistry

    calculate the empirical formula. A chemist heats 50.00g of sulfur under controlled conditions to produce a sulfer-oxygen compund.The mass of the sulfur-oxygen compound is 100.00g. What is the empirical formula of the sulfur-oxygen?

    asked by Ash on October 20, 2010
  17. Chemistry

    If the empirical formula of a compound is CH2 and its molar mass is 70.0, then what is its molecular formula?

    asked by Zayn on December 4, 2018
  18. College Chemistry 3

    Find the empirical Formula of a compound that is 30.4% nitrogen by mass, and consists of only nitrogen and oxygen. What is its molecular formula if its molar mass is 92g/mol?

    asked by Ernesto on August 15, 2012
  19. Chemistry

    How can i determine the molar mass of acetylene and its molecular formula if i only know its density at stp and its empirical formula

    asked by Traci on April 26, 2011
  20. chemistry

    f a compound has an empirical formula of C2HCl what is the molecular formula if the molar mass is 179 g/mol?

    asked by lynda on June 5, 2010
  21. chemistry

    The formula of benzine and organic solvent is C6 H6. what is the empirical formula express the mass of a mole of materials in gram

    asked by shanna on June 8, 2011
  22. chemistry

    Benzene has the empirical formula CH and an experimental molar mass of 78 g/mol. What is its molecular formula? Explain how you got your answer.

    asked by Brittney on April 19, 2012
  23. 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
  24. CHEM HELP! (Check work)

    H3CA is a vitally important intemediate in the metabolism of carbohydrates. The compound is widely distributed in plant and animal tissues and fluids. H3CA is a tiprotric acid, ie, it requires three moles of NaOH to fully neutralize one mole of H3CA. a.)

    asked by Morgan on September 12, 2017
  25. 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
  26. 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
  27. chemistry

    Two naturally occurring isotopes exist for the hypothetical element dippium. 25.0 percent of dippium atoms have a relative mass of 17.0 amu and 75.0 percent a relative mass of 21.3 amu. What is the atomic mass of dippium? Please show the work thanks

    asked by Lisa on February 4, 2014
  28. chemistry

    3. Find the empirical formula for a compound that consists of aluminum and chlorine in which the aluminum is 20.2 % by mass. 4. A sample contains 71.65% CL, 24.27% C nad 4.07% H. the molecular weight is known to be 98.96 g/mol. What are the empirical and

    asked by jhong on March 11, 2012
  29. Chemistry

    a)Would you expect the empirical formula you determine for magnesium oxide to be the same as the one determined by another student? b) Would you expectan empirical formulato be the same even though different masses of Mg were used? Briefly explain. c) If

    asked by Helpme123 on April 5, 2013
  30. chemistry

    A 12.0g sample of carbohydrate contain 4.50g of carbon, 3.25g of oxygen, and some hydrogen. Determine the percent by mass of hydrogen in your product. Find the empirical formula for a compound that consists of aluminum and chlorine in which the aluminum is

    asked by jhong on March 13, 2012
  31. Chemistry

    If 2.00 g of element G reacts with 5.00 g of element M to produce 7.00 g of a compound with the formula G3M2, what is the atomic mass of G if the atomic mass of M is 135.0 amu? Answer is 36 amu but why

    asked by bill on December 9, 2016
  32. 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
  33. 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
  34. chemistry

    Calculate the relative molecular mass of a gas if a 500cm3 sample at 20¢ªC and 1 atomic mass of 0.66g

    asked by jose on June 21, 2011
  35. Chemistry

    A solution of 2.50 g of a compound having the empirical formula C6H5P in 25.0 g of benzene(C6H6) is observed to freeze at 4.3 degrees C. Calculate the molar mass of the solute and its molecular formula.

    asked by Sara on December 3, 2010
  36. College Chemistry2

    A solutionof 2.50g of a compound having the empirical formula C7H6O2 in 25.0g of benzene is observed to freeze at 4.3 degree C.Calculate the molar mass of the solute and its Molecular formula

    asked by Anonymous on February 5, 2011
  37. General Chemistry

    A solution of 2.50g of compound having the empirical formula C6H5P in 25.0g of benzene is observed to freeze at 4.3 degrees Celsius. Calculate the molar mass of the solute and its molecular formula.

    asked by Sasha on September 4, 2011
  38. chemistry

    A liquid was analyzed to be 54.5% C, 9.10% H, and 36.4% O. An empty flask, whose mass was 45.32 g, when filled with the vapor of the liquid at 735mm Hg and 99.2°C had a mass of 46.05 g. The volume of the flask was found to be 263.2 mL. empirical formula

    asked by josh on April 16, 2012
  39. chemistry

    can a compound's empirical and molecular formulas be the same?Explain who cares? Yes, they can. CH4 is methane. That is the empirical formula as well as the molecular formula.

    asked by amanda on January 15, 2007
  40. chem 11

    a gas has an empirical formula C6H7O5. When put in a 50mL bulb at 120 degrees celcius and 120kPa (pressure) it's mass is determined: the mass is 10.37 times as much as C6H6O. What is the molecular formula of the gas (C6H7O5)?

    asked by Anna on November 5, 2012
  41. Chemistry 11

    a gas has an empirical formula C6H7O5. When put in a 50mL bulb at 120 degrees celcius and 120kPa (pressure) it's mass is determined: the mass is 10.37 times as much as C6H6O. What is the molecular formula of the gas (C6H7O5)?

    asked by Anna on November 5, 2012
  42. Chemistry Pretest

    1. What mass of the compound FeWO4 contains 50.0 grams of tungsten (atomic symbol W, atomic number= 74)? **Formula mass of FeWO4 is 303.69** a) 30.0 g FeWO4 b) 304 g FeWO4 c) 82.6 g FeWO4 d) 188 g FeWO4

    asked by Sarah on September 28, 2012
  43. 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
  44. Physics

    A boat travelling at 30km/hr relative to water is headed away from the bank of a river and downstream. The river is 1/2 km wide and flows at 6km/hr. The boat arrives at the opposite bank in 1.24 min. I calculated the perpendicular component of the boat

    asked by Anonymous on March 2, 2008
  45. Chemistry

    What is the empirical formula of a molecule containing 65.5% carbon, 5.5% hydrogen, and 29.0% oxygen? -I found this to be C3H3O and WebAssign says it's right. I need help with part b. If the molar mass of the above compound is 110 grams/mole, what is the

    asked by Bridget on January 11, 2015
  46. science Help 911!!

    One way the modern atomic model differs from Thompson's atomic model is that electrons are no longer scattered throughout an atoms positive matter like chocolate chips in cookie dough. Instead, each electron is outside of the nucleus occupying a

    asked by blue on November 14, 2014
  47. Chemistry

    The element boron has three naturally occuring isotopes. One has the atomic mass 10.0129(54.4%), another 11.0093(12.75%). What is the atomic mass of the third isotope if the average atomic mass of boron is 10.811?

    asked by Anonymous on October 20, 2013
  48. Chemistry

    Lead has four stable isotopes. ^204Pb (1.4%), ^206Pb (24.1%). ^207Pb (22.1%) and ^208Pb (52.4%). Find the atomic mass of ^208 Pb given that ^204Pb has an atomic mass of 203.973 amu, ^206Pb has an atomic mass of 205.974 amu, and ^207Pb has an atomic mass of

    asked by Gigi on September 26, 2010
  49. math

    The circumference of a sphere was measured to be 86 cm with a possible error of 0.2cm. Use differentials to estimate the maximum error in the calculated surface area. Please round the answer to the nearest tenth. What is the relative error in the

    asked by Tina on March 30, 2007
  50. 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
  51. chemistry

    How would you find the empirical formula for this... a substance was found by analysis to contain 20% by mass calcium and 80% by mass bromine.

    asked by Jamie Marie on October 29, 2009
  52. Chemistry

    what is the relative atomic mass of a silicon containing ore with 92% 28'Si,5%29'Si and 3%30'Si?

    asked by Jonathan on March 10, 2017
  53. AP Chemistry

    When finding empirical formula of a compound, why do you have to convert the elements into moles, as opposed to using a mass:mass ratio?

    asked by Nicky on November 16, 2009
  54. chem

    copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic weight of copper to determine the mass of the other copper isotope. How do I do this? Atomic weight=62.939*.6917 + x (1-.6917)

    asked by Jill on February 8, 2007
  55. Chemistry

    If an element N has isotopic abundances X% of mass number 12, atomic number 6, and Y% of N of mass number 13, atomic number 6. If their relative isotopic mass is 12.35. Find X and Y.

    asked by Adigun on January 31, 2014
  56. Chemistry

    If an element N has isotopic abundances X% of mass number 12, atomic number 6, and Y% of N of mass number 13, atomic number 6. If their relative isotopic mass is 12.35. Find X and Y.

    asked by Adigun on January 31, 2014
  57. chem

    methyl salicylate has a mass percent composition of 63.2% C, 31.6% O, and 5.26% H.The mass of one molecule of the compound is 2.53 x 10^-22.Determine the empirical formula and the molecular formula for methyl salicylate.

    asked by pop on July 12, 2011
  58. chemistry

    Derive the empirical formula of a hydrocarbon that on analysis gave the following percentage by mass composition: C = 85.63 % and H = 14.37 %. If the molecular mass of this compound is 56 g, derive the molecular formula.

    asked by Hanin on May 30, 2013
  59. science

    If one mole of the compound Al 4 C 3 has a mass of 144 g and one mole of carbon has a mass of 12 g, calculate the relative atomic mass of the element aluminium. any one helppp please..

    asked by katie on April 20, 2007
  60. chemisrty

    can anybody give me the density of arsenic oxide at STP is this the correct formula volume = mass/ density thanks Yes, but if you want the density, it is density = mass/volume. The number I have seen floating around on this board is 17.8 g/L but the

    asked by bex on February 4, 2007
  61. Chemistry 314

    Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085) , had a total mass of 12.4 ± 0.1 g. What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the

    asked by Amanda on August 30, 2012
  62. Chemistry

    Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085) , had a total mass of 12.4 ± 0.1 g. What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the

    asked by Amanda on August 29, 2012
  63. chemistry help

    Chlorine has two Isotopes with mass number of 35&37.if the relative atomic mass is 35.5, find the percent abudance of Cl-35(isotope with mass number 35)

    asked by Anonymous on October 16, 2016
  64. Chemistry

    Zinc has three major and two minor isotopes. For this problem, assume that the only isotopes of zinc are the major ones, zinc-64, zinc-66, and zinc-68. The atomic mass of zinc-64 is 63.9291 Da, that of zinc-66 is 65.9260 Da, and that of zinc-68 is 67.9248

    asked by Jess on May 3, 2013
  65. chemistry

    Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition. nitroglycerin (used medically as a vasodilator to treat heart conditions): C 15.87% H 2.22% N 18.50% O 63.41%. Express your answer

    asked by Mely on September 20, 2010
  66. chemistry

    Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition. nitroglycerin (used medically as a vasodilator to treat heart conditions): C 15.87% H 2.22% N 18.50% O 63.41%. Express your answer

    asked by Mely on September 19, 2010
  67. Chemistry

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

    asked by Mark on September 18, 2011
  68. Chemistry

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

    asked by Mark on September 18, 2011
  69. chemistry.

    What is the empirical formula of a compound that contains 29% Na, 41% S, and 30% O by mass?

    asked by mary. on September 27, 2009
  70. Chem

    What is the empirical formula of a compound that contains 27.0%S, 13.4%O,and 59.6%Cl by mass?

    asked by Kay on December 8, 2010
  71. Chemistry (empirical formula)

    what is the empirical formula of a compound that is 62.0% C, 10.4% H, and 27.5% O by mass?

    asked by Macey on April 5, 2010
  72. chemistry.

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

    asked by peter on September 25, 2009
  73. Chemistry

    Combustion analysis of 0.343 g of a compound containing C, H, and O produces 0.753 g of CO2 and 0.411 g of H2O. Mass spectral analysis shows that the compound has a molar mass around 120 g mol-1. What is the compound's: Empirical Formula:----- Molecular

    asked by Abraham on March 25, 2010
  74. chemistry

    Combustion analysis of 0.213 g of a compound containing C, H, and O produces 0.468 g of CO2 and 0.255 g of H2O. Mass spectral analysis shows that the compound has a molar mass around 120 g mol-1. What is the compound's: Empirical Formula:(-------)

    asked by sam on April 3, 2010
  75. Chemistry

    Combustion analysis of 0.284 g of a compound containing C, H, and O produces 0.623 g of CO2 and 0.340 g of H2O. Mass spectral analysis shows that the compound has a molar mass around 120 g mol-1. What is the compound's: Empirical Formula: Molecular

    asked by Darali on April 8, 2010
  76. 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
  77. chemistry

    A student is given 3 beakers: Beaker 1- 50.0 ml of a solution produced by dissolving 6.00 grams of a weak monoprotic acid ,HX, in enough water to produce 1 liter of solution. The empirical formula of HX is CH2O. The solution contains 3 drops of

    asked by ashley on February 12, 2012
  78. 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
  79. CHEMISTRY

    The molar mass of benzene, an important industrial solvent, is 78.0 g/mol and its empirical formula is CH. What is the molecular formula for benzene?

    asked by GABS on January 19, 2016
  80. Chemistry

    Question : 4 moles of A(g) is added to a fixed volume container and left until they arrive at the equilibrium status. 2A(g) A2(g) At 127 C total pressure of the equilibrium system is 8.314*10^5 Pa and the density of the mixture of gas is 10 kg/m^3 . If the

    asked by Ashley on January 27, 2019
  81. Chemistry

    a compound has an empirical formula of C3H5O2 and a molar mass of 145,14g. what is the molecular formula of this compound?

    asked by Sammi on March 29, 2010
  82. 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
  83. 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
  84. Chemistry

    An organic compound that has the empirical formula CHO has a molecular mass of 145 amu. Its molecular formula is?

    asked by Stefhanie help me pls on March 14, 2013
  85. Chemistry

    The relative atomic mass of natural lithium is 6.95 it consist of two isotopes of relative masses 6.02 7.02 calculate the natural abundance of the isotopes

    asked by Mary on February 4, 2018
  86. Chemistry

    A student made a determination of the empirical formula ot tungsten oxide (WO) produced by the total ignition of air of a smaple of metallic Tungsten. From the lab: Weight of crucible 11.120g weight of tungsten 8.820 weight of crucible and product (WO)

    asked by Izzie on October 26, 2011
  87. Chemistry (30s)

    I need help on this question. I can't seem to understand it. Find the molecular formula of a compound with a gram molecular mass of 30 g and an empirical formula of CH3. Please show your work! and briefly explain how you got it!

    asked by Candice on March 23, 2016
  88. chemistry.

    An organic compound A contain 62.0% by mass of carbon, 21.1% by mass of nitrogen, the reminder being hydrogen. Determine the percentage by mass of hydrogen and the empirical formula A.....Can any one help me on that?????

    asked by Richard ineed help on September 20, 2009
  89. Chemistry

    I have a problem that I'm wondering is a "trick" question. How many nucleons are there in an atom of 235 (atomic mass) over 92 (atomic #) U? According to the periodic table, the atomic mass is 238, not 235. Any comments? Thanks a lot!

    asked by Jean on July 24, 2010
  90. Chemistry, empirical formula

    Determine the empirical formula for the following compounds with these compositions (by mass): a) Cr 47.7% F 52.3% b) Na 42.1% P 18.9% O 39.0%

    asked by Brian on September 23, 2014
  91. chemistry.

    What is the empirical formula of a compound that contains 29% Na, 41% S, and 30% O by mass? ..My answer is NaSO and I am not sure... can anyone help me for it?????????

    asked by Help generation on September 25, 2009
  92. chemistry

    In the Periodic Table,there are some elements such as Pm (Promethium) and Cm(Curium) that do not have any relative atomic mass. Why is this so?

    asked by janice on January 25, 2009
  93. chemistry

    Calculate the vapour density of a triatomic gasX if it's relative atomic mass is 16

    asked by favour on December 27, 2016
  94. 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
  95. science

    'Imagine there is a tank of unknown gas that contains 53.31% carbon, 11.18% hydrogen, and 35.51% oxygen by mass. At 35.0 °C and 0.455 bar, 2.00 L of the gas has a mass of 3.20 g. Using this information, answer the following questions. a.) What is the

    asked by samuel on October 27, 2014
  96. Chemistry

    A compound has an empirical formula of CH2 and molecular mass of 84g. What is it's molecular formula?

    asked by Mayra on May 29, 2016
  97. chemistry

    Based on the experimental data, I was able to calculate the experimental pKa value which is 5.04 and the literature value of the pKa for KHP is 5.51. If I would be computing for the relative error between the two pKa's it would be 8.52994555%. But then,

    asked by smiley on September 8, 2007
  98. 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
  99. Chemistry

    I found the empirical but i don't know how to get the empirical formula for NH2. can anyone help?

    asked by nalleli on May 17, 2011
  100. Chemistry

    If you use a different mass of magensium metal in an experiment would the empirical formula of the compund be the same?

    asked by Ash on October 20, 2010

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