1. chemistry

    i need the exat percentage of nitrogen in magnesium nitride

    asked by chitra on February 14, 2018
  2. chemistry

    0.197g of magnesium is burned in air 2Mg + O2 ---> 2MgO However, some of the magnesium reacts with nitrogen in the air to form Magnesium nitride instead : 3Mg + N2 --->Mg3N2 So you have a mixture of MgO and Mg3N2 weighing 0.315g.Determine what percentage

    asked by Chansa on May 4, 2016
  3. Chem 2

    If we burn a strip of magnesium in air, there will be two main products, magnesium oxide and magnesium nitride. If we then treat that mixture with water, the nitride ion is converted to ammonia. After boiling away the water and ammonia, we would be left

    asked by Maggie on January 13, 2013
  4. chemistry

    The percentage of nitrogen in magnesium nitride is.?

    asked by Sai on October 13, 2016
  5. Chemistry

    Magnesium forms both an oxide and a nitride when burned in air. Discuss the formation of magnesium oxide and magnesium nitride when magnesium atoms react with oxygen and nitrogen atoms.

    asked by Valerie Ayala on November 1, 2010
  6. chem

    Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium nitride reacts with water to give ammonia. Mg3N2(s) + 6 H2O(l) → 3 Mg(OH)2(s) + 2 NH3(g) What volume of ammonia gas at 24°C and 753 mmHg will be produced

    asked by D on March 6, 2011
  7. Chemistry

    Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. How many grams of magnesium would we have to start

    asked by Anonymous on November 8, 2015
  8. chemistry

    When magnesium burns in air, it reacts with oxygen and nitrogen, forming magnesium oxide and magnesium nitride. If 20.0L of air is available for this reaction, what mass of each compound can be formed? (Remember air is about 80% Nitrogen and 20% Oxygen)

    asked by Chase on March 7, 2013
  9. Chemistry

    Magnesium nitride can be produced by passing nitrogen gas over magnesium metal. 3Mg+N2 --> Mg3N2 IF 28.8g of Mg are mixed with 21g of N2 and allowed to react, which is the limiting reagent?

    asked by Amber on July 24, 2008
  10. Chemistry (Check)

    Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many

    asked by Anonymous on November 9, 2015
  11. Chemistry (Check)

    Ammonia can be produced in a two-step process. First, nitrogen reacts with red-hot magnesium to form magnesium nitride. Then magnesium nitride reacts with water to form magnesium hydroxide and ammonia. A. Write each balanced chemical reaction. B. How many

    asked by Anonymous on November 9, 2015
  12. chemistry

    find mass of magnesium nitride produced in reaction of 5.0of magnesium with 10.0gof nitrogen. the reaction was carried out in a closed container

    asked by Allison on March 10, 2015
  13. Chemistry

    Magnesium burns in air to produce magnesium oxide MgO and magnesium nitride Mg3N2. Magnesium nitride reacts with water to give ammonia. What volume of ammonia gas at 24 degrees C and 753 mmHg will be produced from 4.56 g of magnesium nitride. P= 753 mmHg

    asked by Lauren on October 24, 2007
  14. Chemistry

    The following is a Limiting Reactant problem: Magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas in this reaction: 3 Mg(s) + N2(g) -> Mg3N2(s) How many grams of product are formed from 2.0 mol of N2 (g) and 8.0 mol of Mg(s)?

    asked by Ari on February 9, 2017
  15. Chemistry

    The following is a Limiting Reactant problem: Magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas in this reaction: 3 Mg(s) + N2(g)  Mg3N2(s) How many grams of product are formed from 2.0 mol of N2 (g) and 8.0 mol of Mg(s)?

    asked by Ciaria on March 4, 2015
  16. chemistry

    Magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas in this reaction: 3 Mg(s) + N2(g) --> Mg3N2(s) How many grams of product are formed from 2.0 mol of N2 (g) and 8.0 mol of Mg(s)? i havent been able to figure this one out, can

    asked by louren on March 29, 2016
  17. Chemistry

    Assume that some of the magnesium nitride is not completely converted to magnesium hydroxide and subsequently to magnesium oxide. Will your empirical formula be too high in magnesium or too high in oxygen? Please show any calculations you used to determine

    asked by Liliah on February 15, 2014
  18. Chemistry

    If water is added to magnesium nitride, ammonia gas is produced when the mixture is heated. Mg3N2(s) + 3 H2O(l) => 3 MgO(s) + 2 NH3(g) If 11.1 g of magnesium nitride is treated with water, what volume of ammonia gas would be collected at 23°C and 739 mm

    asked by sam on November 19, 2012
  19. Chemistry

    If water I'd added to magnesium nitride, ammonia gas is produced when the mixture is heated Mg3N2 (s) + 3H2O (l) ----> 3MgO) (s) + 2NH) (g) *Only the numbers at the beginning aren't subscripts* If 10.3 g of magnesium nitride is treated with water, what

    asked by Anon on January 19, 2011
  20. Chemistry

    Assume that some of the magnesium nitride is not completely converted to magnesium hydroxide and subsequently to magnesium oxide. Will your empirical formula be too high in magnesium or too high in oxygen? Please show any calculations you used to determine

    asked by GC on February 14, 2014
  21. chem

    the element nitrogen and magnesium react to give magnesium nitride according to the balanced equation N2 + 3Mg = Mg3N2 suppose you have 0.3616 mol of n2 1-how many moles of mg are needed for complete reaction? 2-what mass of Mg3N2, in grams can be

    asked by burrprett on September 27, 2011
  22. chemistry

    when water is combined with magnesium nitride to produce magnesium hydroxide and ammonia gas,

    asked by PLEASE HELP! on January 26, 2011
  23. Chemistry

    How many moles of magnesium nitride form when 1.0 mole of magnesium reacts completely?

    asked by Carly on March 19, 2017
  24. college

    how many grams of magnesium are required to produce 2.154 g of magnesium nitride?

    asked by Donna on February 28, 2010
  25. Chemistry

    When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. 26.0 grams of magnesium nitride are reacted with 17.6 grams of water. 1. How many grams of magnesium nitride will remain after reaction is

    asked by Jay on September 13, 2017
  26. chemistry

    when water is combined with magnesium nitride to produce magnesium hydroxide and ammonia gas, is this reaction endothermic or exothermic and why?

    asked by PLEASE HELP! on January 26, 2011
  27. Chemistry

    A 4.5 g piece of magnesium ribbon undergoes combustion in air to produce a mixture of two ionic solids, MgO and Mg3N2. Water is added to this mixture. It reacts with the magnesium oxide to form 9.97 g of magnesium hydroxide. Assume all reactions go to

    asked by Doris on October 13, 2010
  28. Chemistry

    How many grams of magnesium nitride are formed from 45.1 moles of magnesium?

    asked by Sophie on April 17, 2013
  29. Chemistry

    Write the balanced equation for: Magnesium nitride + water -> magnesium hydroxide + ammonia MgNO2 + H2O -> MgOH + NH3 Is this correct?

    asked by Hannah on October 9, 2011
  30. Chemistry

    Calcium reacts with nitrogen to form calcium nitride. Indicate which reactant is limiting, calculate the mass of calcium nitride formed when 50.0g of calcium reacts with 50.0g of Nitrogen. How much excess reactant do you have?

    asked by mission princess on July 14, 2013
  31. Chemistry

    When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. If 22.9 grams of magnesium nitride are added to 31.0 grams of water, how many liters of ammonia should be produced (assuming standard

    asked by Jay on September 15, 2017
  32. Science

    What are the formulas for lithium bromide? http://www.webelements.com/webelements/compounds/text/Li/Br1Li1-7550358.html where can i find the formula for cupric nitride,and magnesium chloride also. and what are the formulas for the compounds formed by

    asked by Mark on January 7, 2007
  33. chemistry

    Heating a 2.00g sample of magnesium metal with an excess of pure nitrogen gas produce 2.77g of a compound containing only magnesium and nitrogen. What is the empirical formula for this compound?

    asked by Anonymous on November 21, 2007
  34. science

    Write balanced chemical equations (using symbols) for the following reactions 1.hydrochloric acid reacts with magnesium to form magnesium chloride and hydrogen 2.Nitrogen monoxide burns in oxygen to form nitrogen dioxide

    asked by Lesedi on May 21, 2014
  35. chem

    Calculate the number of grams of magnesium nitride necessary to produce 2.02 L of ammonia gas at STP. I got 4.55g for the upper question which is correct but idk how to do the bottom one: How many moles of magnesium hydroxide can also be formed? Mg3N2(s) +

    asked by rebekah on December 9, 2010
  36. chemistry

    How to test calcium nitride.? ( ca3n2) when calcium reacts with nitrogen , Calcium nitride is formed. How can we test that the product formed is calcium nitride?

    asked by saurav on February 4, 2015
  37. Chem

    what does an -ite or -ate ending in a polyatomic ion mean? i'm thinking it mean Oxygen is in the formula, or is it Sulfur is in the formula? i'm not sure oxygen is in both ites and ates. The ate has more oxygen than ite. NaClO2 sodium chlorite NaClO3

    asked by Dennis on January 10, 2007
  38. Chemistry (Stoichiometry)

    Magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. a) Write a balanced chemical equation for this reaction. b) What is the percentage yield if 10.1g Mg reacts with an excess of water and 21.0g Mg(OH)2 is recovered? c) If 24g

    asked by Nick on March 2, 2011
  39. chemistry

    How can you test calcium nitride.. ( Ca3N2) I have written the reaction between calcium and nitrogen. A question that says " how will you test the product formed " is given. SO can you please help me, How can you test calcium nitride?

    asked by saurav on February 3, 2015
  40. Chemistry

    A compound is formed when 12.2 g Mg combines completely with 5.16 g N. What is the percent composition of this compound? Please show all work and include the percentage of both magnesium and nitrogen.

    asked by Anonymous on December 18, 2017
  41. chemistry

    write and balanced equation for the formation of magnesium nitride from it elements

    asked by nia on May 20, 2010
  42. College Chem

    A 2.446-g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 min. After cooling, the residue weighed 2.216 g. Calculate the percentage of magnesium carbonate in the sample.

    asked by Ann on January 16, 2012
  43. chemistry

    Nitrogen gas, N2, is usually a very inert gas and thus, is often employed in dry boxes. However, it would be a poor choice for use in a dry cell with which of the following substances? A) uranium metal B) Cu/Sn alloys C) Li metals D) Ca metals E) none of

    asked by blobface on April 22, 2007
  44. chemistry

    which of the following compounds contains the lowest percentage by mass of nitrogen? 1) NH4NO3 2) (NH4)2 SO4 3) NaNO3 4) NH3 can someone please help me??what method should i use?how do i do this? Find the molar mass of each compound by adding the molar

    asked by Emma on May 27, 2007
  45. chemestry

    Consider once again the magnesium nitride addition reaction from the previous question. This time, suppose you start with 10.0 g N2 and an unlimited supply of Mg. What is the maximum number of MOLES of Mg3N2 that could be produced in this case?

    asked by cristy on November 17, 2010
  46. Chemistry

    magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. What is the pecentage yield of 10.1g Mg reacts with an excess of water abnd 21.0g Mg 9g (OH)2 is recovered? If 24g Mg is used the percentage yield is 95% how many gramns of

    asked by Brooke on January 10, 2010
  47. Chemistry

    When a 3.80 g sample of magnesium nitride (MW 101g/mol) is reacted with 3.30 g of water, 3.60 g of MgO is formed. What is the percent yield of this reaction? Mg3N2 + 3 H2O --> 2 NH3 + 3 MgO

    asked by Jessica on November 2, 2016
  48. chemistry

    An analyst wants to determine the content of a 7% magnesium hydroxide bottle acquired in a drugstore, through the Volumetry method of neutralization. 8.995 g of magnesium hydroxide suspension were avolumados to 100ml of water, then,25 ml were added to the

    asked by william on June 14, 2018
  49. chemistry

    The percentage of phosphourus in a detergent product may be determined by sample treatment including the precipitation of magnesium ammonium phosphate MgNH4PO4*6H2O (MW=245.41), using an excess of both magnesium and ammonium ions. The separated ans washed

    asked by bria on September 13, 2006
  50. Science

    How many atoms are there in one molecule of the following compounds? a. silver chloride- AgCl b. calcium oxide- CaO c. Magnesium nitride- Mg3N2 d. Aluminium oxide- Al2O3 e. Scandium sulfide- Sc2S3 f. Hydrogen Peroxide- H2O2

    asked by Elle on June 1, 2017
  51. Chemistry

    The explosive residue contains carbon, hydrogen and nitrogen where the percentage of nitrogen is high, calculate it from 0.5g of residue which eliminates ammonia gas on reaction with sodium hydroxide, and absorb by 50mL of Nby10 H2SO4. Unused acid is

    asked by Farah on March 12, 2012
  52. chemistry

    a mixture of gases is prepared for laboratory experiments by combining 4.2 L of oxygen, 0.71 L of nitrogen, and 0.22 L of carbon dioxide. Determine the percentage of nitrogen in the mixture.

    asked by Anonymous on September 5, 2014
  53. chemistry

    what is the formula for magnesium with Nitrogen

    asked by Tammy on March 29, 2010
  54. Quantitative Business Analysis

    John uses a liquid fertilizer to grow flowers in his back room. His fertilizer tank has a capacity of 5 gallons and currently contains 3 gallons of fertilizer which is 10% nitrogen. If he wants to change his fertilizer to 15% nitrogen, what percentage of

    asked by Bernice on December 5, 2014
  55. chemistry

    When magnesium is heated in air, it reacts with oxygen to form magnesium oxide. 2Mg + O2 --> 2MgO If the mass of the magnesium increases by 0.335 g, how many grams of magnesium reacted? A. 0.882 B. 0.441 C. 0.509 D. 1.02 E. Not enough Info

    asked by Kristen on July 6, 2010
  56. chemestry

    Based upon the previous two questions, consider the magnesium nitride addition reaction again. This time, suppose you start with 10.0 g of each reactant. What is the maximum number of MOLES of Mg3N2 that could be produced in this case? Remember that the

    asked by cristy on November 17, 2010
  57. chem

    Magnesium is a chemical element with symbol Mg and atomic number 12. Magnesium only occurs naturally in combination with other elements. It is the one of the least dense of all metals and burns in air with a brilliant-white light. Magnesium is a highly

    asked by ecquation on April 4, 2016
  58. Chemistry

    When heated, lithium reacts with nitrogen to form lithium nitride: 6Li+N2 --> 2Li3N What is the theoretical yield of Li3N in grams when 12.4 g of Li is heated with 33.9g of N2

    asked by Jerry on June 13, 2010
  59. chemistry

    What is the approximate energy required to raise the temperature of 5 L of air by 230 °C? The volume is held constant. (Assume air almost entirely consists of nitrogen, oxygen, and argon, and that it is initially at 273 K. Cv(specific heat) for

    asked by saira on April 17, 2012
  60. chemistry

    What is the approximate energy required to raise the temperature of 5 L of air by 230 °C? The volume is held constant. (Assume air almost entirely consists of nitrogen, oxygen, and argon, and that it is initially at 273 K. Cv for nitrogen=20.7,oxygen=21

    asked by saira on April 17, 2012
  61. physics

    Consider nitrogen gas, N2, at 27.7°C. What percentage of nitrogen molecules have a speed within 1.00 m/s of the most probable speed?

    asked by SUZAN on August 20, 2014
  62. Chemistry

    A 3.214-g sample of magnesium reacts with 8.416g of bromine. The only product is magnesium bromide. If 1.934g of magnesium is left unreacted, how much magnesium bromide is formed? -Sorry, I've completely forgot how to do this..please help

    asked by LHale on January 28, 2011
  63. chemistry

    7. Write the balanced equation for the equation for the reaction of magnesium with HCl. What is the mole ratio between magnesium and magnesium chloride will be produced? If 2.5g of magnesium react, how many moles of magnesium chloride will be produced? How

    asked by pj on January 19, 2010
  64. Stiochiometry

    Equation 2Mg+O2= 2MgO Lab data: Magnesium ribbon= .04 grams Magnesium Oxide= .09 2. Using the initial mass of magnesium, calculate the moles of oxygen and then moles of magnesium oxide produced. What is the mole ratio of the reactants? 3. Calculate the

    asked by Emily on February 26, 2009
  65. science

    Which compound is formed when magnesium oxide combines with nitrogen gas?

    asked by Bhuwan gupta on July 6, 2012
  66. Chemistry

    a 6 g sample of magnesium was burned in a crucible producing 10 g of magnesium oxide. What mass of oxygen reacted with magnesium to form the 10 g of magnesium oxide?

    asked by Darcy on September 29, 2014
  67. Chemistry

    I had to perform an experiment using a coffee-cup calorimeter to determine the enthalpies of two separate reactions. For part 1 we worked with magnesium metal, and magnesium oxide. Data was collected and now I need to find the q, heat transferred for both

    asked by Hannah on February 13, 2012
  68. Chemistry

    Calcium carbonate is insoluble in water. Name two substances that when mixed in solution, will form a precipitate of calcium carbonate. Explain why is it the two substances that you have chosen.  why does magnesium chloride cannot be prepared in the lab

    asked by StuartKess on September 6, 2011
  69. chemistry

    mass of dry crucible=34.69g mass of crucible with magnesium=34.68g mass of crucible with magnesium oxide =34.97g we did a lab and igot the mass for magnesium to be 0.17g and the mass for magnesium oxide to be 0.28g. how can i find the moles of magnesium

    asked by jane c on November 19, 2014
  70. science - atoms and bonds

    #1) Draw the following ions using a Bohr diagram: b)oxygen: i got [oxygen:2)8)]-2 (the -2 is an exponent) but the answer said [oxygen: 2)8)8)]-2...is this right? d)fluorine: i got [fluorine:2)8)]-1 and the book says [fluorine: 2)8)8)]-1..again, is the book

    asked by Sarah on May 10, 2008
  71. Chemistry PLS HELP

    The cover plate is removed from the gas jars shown iin the diagram. Nitrogen dioxide is a brown gas. After several days, the color of the gas is the same in both of the jars. What explains this change? So the picture shows this jar and nitrogen and

    asked by Cheezel on June 23, 2016
  72. Chemistry

    Consider the reaction: 3Ba(s)+N2(g)--->Ba3N2(s) 1)How many moles of barium metal react to produce 0.190 mol of barium nitride? 2)How many moles of nitrogen gas react?

    asked by Jackie on December 15, 2011
  73. chemistry

    Many analytical instruments require liquid nitrogen. While filling an instrument with liquid nitrogen, an analytical chemist slips and spills the contents of the dewer, 25L, onto the floor. Since the boiling point of liquid nitrogen at 1atm is 77.4 K, all

    asked by Missy on October 6, 2010
  74. physical science

    Predict which isotope of nitrogen is more commonly found, nitrogen-14 or nitrogen-15.(Hint: What is the average atomic mass listed for nitrogen in the periodic table?)

    asked by Jameisha on November 30, 2008
  75. Chemistry

    Naturally occurring magnesium consists of Magnesium-24 (23.9850 amu; 78.99%), Magnesium-25 (24.9858 amu), and Magnesium-26 (25.9826 amu). Using the average atomic mass from the periodic table, calculate the closest percent abundance of Magnesuim-26. a)

    asked by Mackenzie on December 15, 2014
  76. Chemistry

    If the 3 moles of Calcium Nitride was then dissolved in 2 L of liquid ammonium what would the molarity of the Calcium Nitride /ammonium solution be?

    asked by moata on April 15, 2012
  77. chem

    Magnesium hydroxide is produced by reacting magnesium oxide with excess water. If the reaction has an expected yield of 81%, how much magnesium oxide should be reacted to produce 98.0 g of magnesium hydroxide? MgO(s)+H2O(l)->Mg(OH)2(aq)

    asked by nela on February 11, 2018
  78. Chemistry Lab MgO

    If in Part B.2, the burning of the magnesium is uncontrolled (burns brightly), how will this procedural error affect the reported mass of: a Magnesium in the magnesium oxide? Explain. B. oxygen in the magnesium oxide? Explain.

    asked by melbell on September 21, 2014
  79. Chemistry

    Many analytical instruments require liquid nitrogen. While filling an instrument with liquid nitrogen, an analytical chemist slips and spills the contents of the dewer, 29.0 L, onto the floor. Since the boiling point of liquid nitrogen at 1.00 atm is 77.4

    asked by Katie on July 15, 2010
  80. chem

    Magnesium hydroxide is produced by reacting magnesium oxide with excess water. If the reaction has an expected yield of 81%, how much magnesium oxide should be reacted to produce 98.0 g of magnesium hydroxide?

    asked by nela on February 11, 2018
  81. Physics of materials

    Gaseous nitrogen has a density of 1.17 kg/m3 and liquid nitrogen has a density of 810 kg/m3. [The relative molecular mass of nitrogen is 28.0] What is the mean volume per nitrogen molecule in each case? What is the mean separation between nitrogen

    asked by Francesca on May 18, 2011
  82. Material Physics

    Gaseous nitrogen has a density of 1.17 kg/m3 and liquid nitrogen has a density of 810 kg/m3. [The relative molecular mass of nitrogen is 28.0] What is the mean volume per nitrogen molecule in each case? What is the mean separation between nitrogen

    asked by Paula on May 24, 2011
  83. science

    How do you calculate the atomic mass of magnesium? 79% magnesium-24, 10% magnesium-25, 11% magnesium-26

    asked by katie on March 14, 2011
  84. Math - Algebra

    Need help understanding this problem. Looks like an exponential growth/decay. Magnesium-27 has a half life of 9.45 minutes and can be described by using the equation “y=ae^-kt . What is the decay constant (k) for Magnesium-27? How many mg of Magnesium-27

    asked by Mitchel on February 22, 2018
  85. Science check my answers

    Which step in the nitrogen cycle is accelerated at the beginning of the eutrophication process? denitrification*** nitrogen fixation producer uptake of nitrogen consumer decomposition Which of the following is carried out by denitrifying bacteria? break

    asked by anonymous on March 13, 2014
  86. chemistry

    A piece of magnesium weighing 48 grams is burned in air n 80 gram of magnesium oxide is formed. what mass of oxygen combined with the magnesium is in the reaction?

    asked by Rodney on March 23, 2014
  87. chemistry

    When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 4.8 M is required to react completely with 2.60 g of magnesium?

    asked by Anonymous on January 19, 2015
  88. Science

    A piece of magnesium ribbon weight 24g is burn in air an 40g magnesium oxide is formed. What mass of oxygen combined with the magnesium in this reaction

    asked by Anonymous on August 20, 2014
  89. Chemistry

    Describe how you can show that a chemical reaction adhers to the law of conservation of mass. Chemical reaction: magnesium hydroxide added to phosphoric acid produces magnesium phosphate and water. Find the mass percentage of each compound as well as the

    asked by Jessica on December 11, 2008
  90. Chemistry

    4.13 grams of magnesium chloride were recovered after the chemical reaction between magnesium and chlorine gas occurred. If 7.10 grams of magnesium chloride was suppose to be produced, what is the percent yield of magnesium chloride?

    asked by Christian on April 22, 2016
  91. AP Chemistry

    When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 5.0 M HCI is required to react completely with 3.00 g of magnesium?

    asked by Angel on November 8, 2009
  92. Chemistry

    When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 9.0 M HCl is required to react completely with 5.00 g of magnesium?

    asked by Mattie on October 19, 2010
  93. Chemistry

    What is the percentage of nitrogen in N2O?

    asked by Ciaria on March 3, 2015
  94. Science asap

    Which organisms are capable of converting gaseous nitrogen in the air into a form that other living organisms can use? nitrogen-fixing bacteria denitrifying bacteria decomposers producers Which step in the nitrogen cycle is accelerated at the beginning of

    asked by anonymous on March 18, 2014
  95. Chemistry

    I have an exam in a day and I'm confused on how to solve this question. Do I use PV=nRT? Do I find out the molecular formula of the gas from the percentage of nitrogen and oxygen? A sample of a mixture of gases contains 80.0% nitrogen gas and 20.0% oxygen

    asked by Jenny on June 23, 2014
  96. chemistry

    simple ion does each of the following elements most commonly form? a. Sodium ……………. b. Iodine ..…………. c. Potassium .…………… d. Calcium .…………… e. Sulfur .…………… f. Magnesium .…………… g. Aluminum

    asked by dido on November 10, 2009
  97. Science question, only 1

    What would be the consequence of an ecosystem that had no nitrogen-fixing bacteria? Nitrogen from decomposing animals would never be returned to the soil. Decomposers would not be able to break down the nitrogen present in plants they feed on. Plants would

    asked by anonymous on March 19, 2014
  98. chemistry

    given that the molecular weight of mg(oh)2, magnesium hydrogen, is 58-32g, what percentage of this compound is oxygen?

    asked by Musawar on November 10, 2010
  99. chemistry

    given that the molecular weight of mg(oh)2, magnesium hydrogen, is 58-32g, what percentage of this compound is oxygen?

    asked by Musawar on November 10, 2010
  100. chemistry

    given that the molecular weight of mg(oh)2, magnesium hydrogen, is 58-32g, what percentage of this compound is oxygen?

    asked by Musawar on November 10, 2010