1. Chemistry

    Suppose you tried to combine 42 grams of magnesium with 45 grams of oxygen. Which of the two substances would be left after the reaction? How much magnesium oxide will be formed?

    asked by Chris on October 4, 2010
  2. chemistry

    Suppose you tried to combine 42 grams of magnesium with 42 grams of oxygen. Which of the two substances would have some left after the reaction and how much magnesium oxide would be formed?

    asked by tony on March 4, 2010
  3. Chemistry

    Draw a Bohr diagram of the protons and electrons in each of the following. a) an atom of magnesium Do I draw this with 19 atoms surrounding the shell of Magnesium around?

    asked by Derrick on July 8, 2010
  4. Statistics

    Many states are carefully considering steps that would help them collect sales taxes on items purchased through the Internet. How many randomly selected sales transactions must be surveyed to determine the percentage that transpired over the Internet?

    asked by Kasey on July 1, 2014
  5. chemistry

    You need to make an aqueous solution of 0.121 M magnesium chloride for an experiment in lab, using a 250 mL volumetric flask. How much solid magnesium chloride should you add ?

    asked by Linda on October 29, 2011
  6. chemistry

    if a sample of alloy containing magnesium and metal that doesn't react wtih hydrochloric acid are reacted, how much heat would be evolved from a 5 gram sample that is 30% magnesium?

    asked by mike on July 13, 2011
  7. chemistry

    Magnesium oxide forms from magnesium metal and oxygen gas. Write a word equation and an unblanced formula equation. Include all of the appropriate notations.

    asked by kate on February 4, 2009
  8. chemistry

    Solid magnesium metal reacts with chlorine gas according to the following equation: Mg + Cl2 --> MgCl2 What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 13.2 g of Cl2

    asked by kellie on September 18, 2010
  9. Science (Forming Compounds)

    Can Magnesium and Sulphur form a compound? If so, what is the chemical formul of the compound? MgS magnesium sulfide http://en.wikipedia.org/wiki/Magnesium_sulfide

    asked by Bianca on November 5, 2006
  10. Chem Simple question

    Magnesium metal burns in oxygen to form magnesium oxide, MgO. (a) Write a balanced equation for the reaction Why is it 2Mg+O2->2MgO and not Mg+O->MgO

    asked by Julie on September 29, 2013
  11. chemistry

    Solid magnesium metal reacts with chlorine gas according to the following equation: Mg + Cl2 --> MgCl2 What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 13.2 g of Cl2

    asked by sarah on September 16, 2010
  12. chemistry

    nitrogen gas and oxygen gas combines to produce nitrogen dioxide. What amount of oxygen gas is needed to completely react with 3kg of nitrogen gas?

    asked by tarkan on November 11, 2010
  13. chemistry

    The solubility of nitrogen gas in water at 25 °C and 1 atm is 6.8!10"4 mol/L. If the partial pressure of nitrogen gas in air above water is 0.76 atm, what is the concentration of dissolved nitrogen?

    asked by Anonymous on November 7, 2011
  14. chemistry

    You wish to remove nitrogen from the near-surface region of a plate of cobalt which is 1.0 cm thick. The plate is placed in a furnace at 417∘ C where an atmosphere of H2 and NH3 reacts with the nitrogen in the cobalt and fixes the surface concentration

    asked by lisa on December 7, 2012
  15. chemistry

    You wish to remove nitrogen from the near-surface region of a plate of cobalt which is 1.0 cm thick. The plate is placed in a furnace at 417∘ C where an atmosphere of H2 and NH3 reacts with the nitrogen in the cobalt and fixes the surface concentration

    asked by lisa on December 7, 2012
  16. chemistry

    You wish to remove nitrogen from the near-surface region of a plate of cobalt which is 1.0 cm thick. The plate is placed in a furnace at 417∘ C where an atmosphere of H2 and NH3 reacts with the nitrogen in the cobalt and fixes the surface concentration

    asked by lisa on December 7, 2012
  17. Chemistry

    You wish to remove nitrogen from the near-surface region of a plate of cobalt which is 1.0 cm thick. The plate is placed in a furnace at 417∘ C where an atmosphere of H2 and NH3 reacts with the nitrogen in the cobalt and fixes the surface concentration

    asked by Andrea on December 6, 2012
  18. chemistry

    You wish to remove nitrogen from the near-surface region of a plate of cobalt which is 1.0 cm thick. The plate is placed in a furnace at 417∘ C where an atmosphere of H2 and NH3 reacts with the nitrogen in the cobalt and fixes the surface concentration

    asked by lisa on December 7, 2012
  19. chemistry

    You wish to remove nitrogen from the near-surface region of a plate of cobalt which is 1.0 cm thick. The plate is placed in a furnace at 417∘ C where an atmosphere of H2 and NH3 reacts with the nitrogen in the cobalt and fixes the surface concentration

    asked by lisa on December 7, 2012
  20. Chemistry

    If one 5 mL dose of Milk of Magnesia contains 400 mg of magnesium hydroxide, calculate the concentration of magnesium hydroxide in mol/L.

    asked by David on November 12, 2017
  21. chemistry

    how would the loss of magnesium oxide smoke affect the empirical formula for magnesium oxide? show me the calculations please

    asked by wifaj on January 23, 2009
  22. chemistry

    magnesium react with hydrochloric acid,what is the volume of hydrogen produced at r.t.p when 0.12g of magnesium ribbon react?

    asked by BLESSING on February 15, 2017
  23. Chemistry

    How many moles of magnesium are in Magnesium Chloride?

    asked by Gina on October 25, 2014
  24. science

    how many atoms of magnesium are in the magnesium molecule?

    asked by mable on October 30, 2012
  25. Chemistry

    Upon decomposition, one sample of magnesium fluoride produced 1.64 kg of magnesium and 2.57 kg of fluorine. A second sample produced 1.38 kg of magnesium. How much fluorine (in grams) did the second sample produce?

    asked by Tiffany on July 8, 2010
  26. chemistry

    Upon decomposition, one sample of magnesium fluoride produced 1.65 kg{\rm kg} of magnesium and 2.58 kg{\rm kg} of fluorine. A second sample produced 1.50 kg{\rm kg} of magnesium. How much fluorine (in grams) did the second sample produce?

    asked by skittles on March 28, 2014
  27. Chem

    Upon decomposition, one sample of magnesium fluoride produced 1.65 of magnesium and 2.57 of fluorine. A second sample produced 1.38 of magnesium. How much fluorine (in grams) did the second sample produce?

    asked by KNH on February 18, 2011
  28. Chemistry

    A reaction of magnesium with nickel (iii) chloride will produce magnesium chloride and nickel. Using 31.76g of magnesium would produce how many grams of nickel?

    asked by Nicole on October 22, 2012
  29. Chemistry

    According to the following reaction, how many grams of nitrogen gas will be formed upon the complete reaction of 22.2 grams of hydrogen gas with excess nitrogen monoxide? nitrogen monoxide (g) + hydrogen (g) nitrogen (g) + water (l)

    asked by Kaitlin on October 16, 2012
  30. Chem

    What is the molarity (M) of an HCl solution, 150 ml of which when treated with excess magnesium liberates 3.5 l of H2 gas measured at STP? I know molarity is Moles, volume, but how does magnesium come into play?

    asked by Johnie HELPPPPP on April 17, 2013
  31. college

    18.0 grams of oxygen is reacted with nitrogen to make 56.0 grams of nitrogen dioxide according to the following reaction: 2O2 + N2 ---> 2 NO2 How much nitrogen (in grams) reacted?

    asked by SAMM on November 19, 2010
  32. Chemistry

    Evacuated glass ampules is held at 1000 degree C with a perfect vacuum inside.estimate e steady state leak rate per unit area of nitrogen gas into th e ampule.the diffusivity of nitrogen gas is 10^-11 m^2/s.wall thickness of ampule is 0.5 mm.surface

    asked by Anonymous on May 6, 2015
  33. Chemistry

    please HELP!! mass of magnesium chloride =.2 mass of chlorine in magnesium chloride =.1 A)moles of magnesium? B)moles of chlorine? C)moles of magnesium divided by the smaller number of moles? D)moles of chlorine divided by the smaller number of moles?

    asked by Gina on October 25, 2014
  34. Chemistry

    Magnesium is found in the ore,magnesite, MgCO3. The ore decomposes when heated to form magnesium oxide and carbon dioxide. Write the balanced equation for this reaction.

    asked by Tom on April 24, 2011
  35. chemistry

    Solid magnesium metal reacts with chlorine gas according to the following equation: Mg + Cl2 --> MgCl2 What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 13.2 g of Cl2 is this correct 7 g+13.2 g = 20.2 grams ?

    asked by kellie on September 19, 2010
  36. Gateway

    I have 10g of magnesium oxide that I heat to make 6g of magnesium and oxygen. how much oxygen is made? What kind of change is this, physical or chemical? why did you pick your answer? Explain in 2 sentences

    asked by Zykeriah on September 14, 2016
  37. Chemistry

    3.91 mol of magnesium and 3.91 mol of hydrochloric acid are reacted, how many grams of magnesium chloride will be produced?

    asked by Oliver on July 31, 2013
  38. Chemistry 111

    calculate the number of moles of magnesium, chlorine, and oxygen atoms in 8.80 moles of magnesium perchlorate?

    asked by kee on July 14, 2011
  39. Chemistry

    Solid magnesium reacts with oxygen gas to produce 568g of solid magnesium oxide.

    asked by Emmaly on January 17, 2013
  40. physical science

    4.8g of magnesium react was completely burned in oxygen and magnesiumoxide was produced. what is the mass of magnesium produced?

    asked by Ruben Amwenyo on November 8, 2016
  41. Chemistry

    Why is Mo(II)nitride = MoN3 and not M02N3 Also Why is PbO2 not Pb2O4 Thanks You!

    asked by Jason on February 2, 2012
  42. physics

    In ammonia (NH3) molecule, the three hydrogen atoms form an equilateral triangle, the distance between the centers of the atoms being 16.28x10^-11 m, so that the center of the triangle is 9.40x10^-11 m from each hydrogen atom. The nitrogen atom is at the

    asked by Brianna on October 10, 2011
  43. SCIENCE

    In ion-assisted etching process, CHF3 is used in: Dry etching of silicon dioxide Dry etching of silicon nitride Wet etching of silicon dioxide Dry etching of silicon dioxide and silicon nitride

    asked by MEMS on August 27, 2018
  44. 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
  45. Chemistry

    You need to make an aqueous solution of 0.233 M magnesium nitrate for an experiment in lab, using a 125 mL volumetric flask. How much solid magnesium nitrate should you add? (fill in blank) __ grams

    asked by Ashley on July 3, 2017
  46. chemistry

    if air contains78% of nitrogen by volume what is the solubility nitrogen in water at 25 degree celcius?

    asked by minte on October 20, 2013
  47. Chemistry

    A 26 L flask at 273 K and 17 Torr contains nitrogen . What mass of the nitrogen is present? Answerand units of g.

    asked by Anonymous on May 28, 2015
  48. science

    47.25 L sample of nitrogen is determinedto contain 0.75 mole of nitrogen moles of provided presure remain the same?

    asked by Anonymous on February 18, 2016
  49. physics

    Find the partial pressure of nitrogen gas in the equatjon Nitrogen+Oxygen gives Niticoxide

    asked by Anonymous on August 2, 2015
  50. Science

    The process of changing free nitrogen gas into a usable form of nitrogen is called?

    asked by Angie on December 2, 2012
  51. Chemistry

    How would you write the equation to represent "Nitrogen and Oxygen react to form Nitrogen Dioxide".

    asked by Elle on October 4, 2015
  52. Oceanography

    What is OIL/RIG? What is its importance in the nitrogen cycle? How does nitrogen enter a marine system?

    asked by Malyssa on March 13, 2008
  53. science

    47.25 L sample of nitrogen is determinedto contain 0.75 mole of nitrogen moles of provided presure remain the same?

    asked by nympha on February 18, 2016
  54. Chemistry

    A 23 L flask at 254 K and 19 Torr contains nitrogen. What mass of nitrogen is present? Answer in units of g.

    asked by Laurie on October 2, 2011
  55. chemistry

    why is the ionisation energy of oxgen less than that of nitrogen even if oxygen is to the right hand side of nitrogen?

    asked by kabelo on September 18, 2010
  56. science

    the process of changing free nitrogen into a usable form of nitrogen is called

    asked by nikki on April 4, 2018
  57. chemistry 1

    If the mas of liquid nitrogen originally placed in the flask was 1.8 g, what is the density of the nitrogen gas?

    asked by Cally on February 15, 2012
  58. Chem

    Is this true? The molar mass of nitrogen gas is 14.0 g. Nitrogen occurs in nature as N2

    asked by Chris on February 4, 2007
  59. bio

    Why is nitrogen fixation necessary? How is it accomplished in nature? How can soil nitrogen be supplemented for agriculture?

    asked by jenni on July 1, 2008
  60. Chemistry

    How many liters of liquid nitrogen are produced when 360.0 L of nitrogen gas is liquified at 77.36 kl

    asked by Andrea on October 9, 2014
  61. physics

    The density of nitrogen at STP is 1.25 kgm^-3. Find the r.m.s velocity of nitrogen molecule at 20 degree centigrade.

    asked by Edwin on March 13, 2010
  62. Chemistry(Please help)

    Nitrogen monoxide + Hydrogen --> nitrogen + water I need to balance this equation but I do not know how. NO + H --> N + H2O 2NO + 2H --> 2N Would this be correct? Thank you!!

    asked by Hannah on November 23, 2011
  63. Lysine Basic/Nonbasic Hydrogens

    For the amino acid Lysine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded

    asked by Kim on June 6, 2009
  64. amino acids

    For the amino acid Lysine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded

    asked by Kim on June 6, 2009
  65. histidine basic/nonbasic nitrogens

    For the amino acid histidine, the nitrogen with the H attached to it is not basic (since you can draw out the resonance for it). But the other nitrogen that has a double bond is not basic. Why is this?? I can draw out the resonance for the double bonded

    asked by Kim on June 6, 2009
  66. chemistry

    The density of air is 1.25 gram per liter determine the volume percentage of oxygen in the air at 1 atmospheric pressure and 27 degree celcius temprature? Assume air is a mixture of nitrogen and oxygen.

    asked by Neha ghatia on September 6, 2010
  67. chemistry

    Solid magnesium metal reacts with chlorine gas according to the following equation: Mg + Cl2 --> MgCl2 What mass of magnesium chloride is formed in the reaction between 7 g of Mg and 13.2 g of Cl2 I got 7/24.3= .288 13.2/70.90= 1.861777 thats as far as i

    asked by kellie on September 20, 2010
  68. Chemistry

    How do you calculate the number of moles and atoms of magnesium given the number o grams of magnesium chloride?

    asked by Anonymous on January 6, 2016
  69. chemistry

    The molar mass of magnesium carbonate, MgCO3, is 84 g/mole. How many moles are in 12.60 g of magnesium carbonate?

    asked by brianna on December 5, 2009
  70. chemistry

    How man grams of nitrogen monoxide are needed to react with adequate oxygen to produce 89.6 L of nitrogen dioxide

    asked by Bob on March 22, 2012
  71. Ecology

    The nitrogen utilized by most plants is derived from  A. decayed organic matter. B. nitrogen gas. C. soil. D. the atmosphere. ?

    asked by Brooklyn on August 27, 2015
  72. Chemistry

    Deduce the number of nitrogen atoms in: 5.00 x 10^-3 mol of ammonia, NH3 and 4.601 g of nitrogen dioxide, NO2

    asked by Syndra on September 26, 2014
  73. physics

    calculate the root mean square speed of nitrogen at 0 degree celcuis. Take the molecular weight of nitrogen M= 28*0.0010

    asked by magayaki on August 9, 2016
  74. physics

    Find the partial pressure of nitrogen gas in the equatjon at one atmosphere atm Nitrogen+Oxygen gives Niticoxide

    asked by Anonymous on August 2, 2015
  75. chemistry

    In one mole of the compound nitrogen diox- ide, what fraction of the total number of ions is the nitrogen ion?

    asked by Bob on January 9, 2011
  76. Science

    In the nitrogen cycle, rabbits eat plants. Nitrogen is found in the rabbit in the form or proteins or bacteria?

    asked by Kelley on October 14, 2014
  77. Chemistry

    What is the half-life of a 100.0 g sample of nitrogen-16 that decays to 12.5 g of nitrogen-16 in 21.6 s? Please help me!!

    asked by Matthew on December 12, 2012
  78. Chemistry

    In the equation N2 + 2 O2 → 2 NO2, 14 g of nitrogen can produce how many grams of nitrogen dioxide?

    asked by Kellie on October 16, 2013
  79. Chemistry

    The empirical formula of an oxide of nitrogen containg 30.4 per cent of nitrogen is NO

    asked by Princess on January 16, 2016
  80. physics

    A neutron in a reactor makes an elastic head-on collision with a nitrogen atom that is initially at rest. (The mass of the nitrogen nucleus is about 14 times that of the neutron.) (a) What fraction of the neutron's kinetic energy is transferred to the

    asked by heather on October 29, 2012
  81. chemistry

    If the boron nitride molecule,BN, were to form, what would its structure look like? pls. need help

    asked by shay on September 28, 2012
  82. profit and loss

    mr. rajesh calculates his profit percentage as a percentage of selling price. he sells an item for rs.150 and calculates his profit percentage to be 20% what is the true profit percentage

    asked by vipul on September 8, 2016
  83. chemistry

    A nitrogen atom has 7 protons, and its most common isotope has 7 neutrons. A radioactive isotope of nitrogen has 9 neutrons. What is the atomic number and what is the mass number of this radioactive nitrogen? Show all of your work for full credit

    asked by jesse on August 27, 2012
  84. Chemistry

    Ammonia is composed of hydrogen and nitrogen in a ratio of 9.33 g of nitrogen to 2.00 g of hydrogen. If 2.19 g of nitrogen combined completely with hydrogen to form ammonia, what mass (g) of ammonia would be formed?

    asked by alex on February 23, 2013
  85. Chemistry

    One step of the Ostwald process for manufacturing nitric acid involves making nitrogen monoxide by oxidizing ammonia in the presence of a platinum catalyst: 4NH3 (g) + 502 (g)>> 4NO (g) + 6H2O (g). If the percentage yield is 80.3%, how many grams of NO can

    asked by Shane on June 10, 2013
  86. chemistry

    Solid silicon and solid magnesium chloride forms when silison tetrachloride gas reacts with magnesium metal. Write a word equations and an ublanced formula equation. Include all of the appropriate notations.

    asked by kate on February 4, 2009
  87. chemistry

    0.35 grams of an unknown solid containing magnesium hydroxide is combined with 50 mL of 0.25M nitric acid. If 34.5mL of 0.1 NaOH was required to reach an endpoint, determine the concentration of magnesium hydroxide inthe sample.

    asked by Steve on November 17, 2010
  88. chemistry

    Solid silicon and solid magnesium chloride forms when silison tetrachloride gas reacts with magnesium metal. Write a word equations and an ublanced formula equation. Include all of the appropriate notations.

    asked by kate on February 4, 2009
  89. Math

    Grade 7 students were surveyed to determine how many hours per day they spent on various activities. The results are shown in the circle graph below. About how many hours per day altogether were spent on watching TV and homework? The percentage for

    asked by Anonymous on March 18, 2015
  90. chemistry

    In an experiment of hydrogen reacts with 110.0 g nitrogen gas, producing 100.1 g ammonia. a) How many grams of nitrogen will be left over?

    asked by meks on March 24, 2014
  91. statistics

    many states are considering steps that would help them collect sales taxes on items purchased through the internet. how many randomly selected sales transactions must be surveyed to determine the percentage that transpired over the internet? assume that we

    asked by camera on May 8, 2010
  92. DrBob222

    Im in the 10th grade in Chemistry 1 Honors. Im learning to write a chemical equation. Im confuse on that statement i was given for my homework. The products and reactants are just magnesium Sulfide and magnesium and sulfur? Then why are they talking about

    asked by Christy on April 30, 2008
  93. Math

    You searched for: Many states are carefully considering steps that would help them collect sales taxes on items purchased through the internet. how many randomly selected sales transactions must be surveyed to determine the percentage that transpired over

    asked by Katia Mastrotti on July 10, 2012
  94. chemistry

    400cm3 of nitrogen at 30degree celsius is heated at constant pressure to a temperature 50degree celcius.find the new volume of the nitrogen.

    asked by pete onoriode on March 16, 2011
  95. chemistry

    400cm3 of nitrogen at 30degree celsius is heated at constant pressure to a temperature 50degree celcius.find the new volume of the nitrogen.

    asked by peter onoriode on March 16, 2011
  96. Science

    Help please! Nitrogen-fixing bacteria in soil turns nitrogen gas into _____. ammonia oxygen water carbon dioxide Please help!

    asked by Layla on January 22, 2018
  97. Chemistry

    Magnesium oxide can be made by heating magnesium metal in the presence of the oxygen. The balanced equation for the reaction is 2Mg(s)+O2(g)¨2MgO(s) When 10.2 g Mg is allowed to react with 10.6 g O2, 11.8 g MgO is collected. Determine the theoretical

    asked by Keishaun on September 18, 2015
  98. chemistry

    having trouble posting but will try again. translate the following verbal description into scientific notation. magnesium ribbon is burned in pure oxygen gas. thanks The reaction forms magnesium oxide (MgO). Se if you can write the balanced reaction.

    asked by key on January 19, 2007
  99. chemistry12_2016-3

    400 centimetre cube of 0.5mol/decimetre cube hydrochloric acid was reacted with 5 grams of magnesium oxide. (A) Calculate & identify the Excess & limiting reactants. (B) What mass of magnesium actually took part in the reaction?

    asked by Anonymous666_4 on March 27, 2016
  100. chemistry

    if air contains 78% of nitrogen, what is the solubility of nitrogen in water at 298k

    asked by geta on October 17, 2017