1. Chemistry

    Some antacid tablets actually contain a mixture of calcium carbonate and magnesium hydroxide (though they usually have the same “strength” as those that only contain CaCO3). If this had been the case for the antacid you tested, but you still assumed it

    asked by Jim on April 3, 2013
  2. College chemistry

    A farmer applies 13.50 kg of a fertilizer that contains 10.0% nitrogen to his fields each year. Fifteen (15.0%) percent of the fertilizer washes into a river that runs through the farm. If the river flows at an average rate of 0.265 cubic feet per second.

    asked by Unknown on January 22, 2013
  3. chem

    The solubility of nitrogen in water is 8.21 E-4 mol/L at 0°C when the nitrogen pressure above water is 0.790 atm. Calculate the solubility of nitrogen in water when the partial pressure of nitrogen above water is 9.55 atm at 0°C?

    asked by madd on May 8, 2013
  4. Chem

    In the reaction that forms aluminum nitride from its elements, which element is being oxidized?

    asked by Dan on November 16, 2015
  5. Chemistry

    a) Ammonia, an important source of fixed nitrogen that can be metabolized by plants, is produced using the Haber process in which nitrogen and hydrogen combine. N2(g) + 3H2(g) → 2NH3(g) How many grams of nitrogen are needed to produce 325 grams of

    asked by Uma on September 16, 2014
  6. Chemistry

    Silver forms a compound with nitrogen. In an experiment, 344.588 g of silver is placed in a reaction vessel with 15.906 of nitrogen. After the reaction is complete, all of the silver has been consumed, and there are 359.503 g of compound in the vessel.

    asked by Tray on May 20, 2014
  7. Chemistry

    A farmer supplies 1250.0 kg of a fertilizer that contains 10& nitrogen to his fields each year. Fifteen percent of the fertilizer washes into a river that runs through the farm. If the river flows at an average rate of 0.165 cubic feet per second, what is

    asked by David Cardenas on September 6, 2014
  8. Chemistry

    A farmer applies 1400.0 kg of a fertilizer that contains 10.0% nitrogen to his fields each year. fifteen (15.0%) percent of the fertilizer washes into a river that runs through the farm. If the river flows at an average rate of 0.410 cubic feet per second,

    asked by Mohammed on August 30, 2013
  9. Chemistry

    If a solution of sodium phosphate, Na3PO4, is poured into seawater, precipitates of calcium phosphate and magnesium phosphate are formed. (Magnesium and calcium ions are among the principle ions found in seawater.) Write net ionic reactions for the

    asked by Emily on June 27, 2011
  10. Algebra

    What is the exponential growth or decay. Of this function and the constant percentage? 20(.876)^x Would the percentage be expressed a decimal? I know it is decay ,so would you just add a negative to whatever percentage you get?

    asked by Rose on December 17, 2017
  11. chemistry

    How many grams of magnesium oxide are produced when 40 grams of oxygen react with magnesium

    asked by jordan on May 8, 2011
  12. chemistry

    How many grams of magnesium metal are produced by the decomposition of 19 grams of magnesium chloride?

    asked by nate on February 6, 2012
  13. Chemistry

    A car air bag requires 70. L of nitrogen gas to inflate properly. The following equation represents the production of nitrogen gas: 2NaNsubscript3 -> 2Na + 3Nsubscript2 The density of nitrogen gas is typically 1.16g/L at room temp. Calculate the number of

    asked by Jenna on January 10, 2010
  14. chemistry grade 12 science

    Q. When 300ml of TiCl4(gas), at 48 degrees celcius and a pressure of 105.4kPa, is reacted with 0.4320 g of magnesium, 0.4016 g of titanium is produced. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction -

    asked by kite on February 4, 2009
  15. 12 chem

    Q. When 300ml of Ticl4(gas), at 48 degrees Celcius and a pressure of 105.3 kPa, is reactes with 0.4320 g of magnesium, 0.4016 g of titanium is produces. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction.

    asked by wiz on February 4, 2009
  16. chemistry grade 12

    Q. When 300ml of TiCl4(gas), at 48 degrees celcius and a pressure of 105.4kPa, is reacted with 0.4320 g of magnesium, 0.4016 g of titanium is produced. TiCl4(gas) + 2Mg(solid) --> Ti(solid) + 2MgCl2(solid) Calculate the percentage yield for this reaction -

    asked by kite on February 4, 2009
  17. chemistry

    Magnesium reacts with iron(II) chloride according to the equation Mg(s) + FeCl2(aq) → MgCl2(aq) + Fe(s) a. Is magnesium oxidized or is it reduced? Magnesium is reduced. b. Is iron(II) ion oxidized or is it reduced? Iron(II) ion is oxidized . c. What is

    asked by krystal on February 11, 2012
  18. chemistry

    how could solid magnesium phosphate be prepared and collected using hydrochloric acid, sodium phosphate solution, water and magnesium? For the answer, write a series of steps that describe the procedure and includes a balanced chemical equation for each

    asked by Lily on October 15, 2014
  19. Statistics

    The music industry must adjust to the growing practice of consumers downloading songs instead of buying CDs. It therefore becomes important to estimate the proportion of songs that are currently downloaded. How many randomly selected song purchases must be

    asked by Elizabeth on July 21, 2015
  20. Statistics

    The music industry must adjust to the growing practice o consumers downloading songs instead of buying CDs. It therefore becomes important to estimate the proportion of songs that are currently downloaded. How many randomly selected song purchases must be

    asked by Lizzy on July 22, 2015
  21. Chemistry

    A mixture of nitrogen gas and hydrogen gas reacts in a closed container to form ammonia gas. The reaction ceases before either reactant is completely consumed. At this stage the container has 3.0 mol each of all three gases; nitrogen, hydrogen and ammonia.

    asked by megs on June 30, 2013
  22. Chemistry

    A solution of magnesium chloride, MgCl2, is prepared by dissolving 19.0g of MgCl2 in 250 mL OF water. a.) Calculate the weight percent of magnesium chloride in solution. b.)The denstiy of the above solution is 1.05 g/mL. Calculate the molarity of the

    asked by Josh on October 25, 2012
  23. Chemistry

    Calculate the mass of nitrogen dissolved at room temperature in an 80L home aquarium. Assume total pressure of 1 atm and mole fraction of .78 for nitrogen

    asked by Johannie on September 20, 2010
  24. CHEM

    Calculate the mass of nitrogen dissolved at room temperature in an 80L home aquarium. Assume total pressure of 1 atm and mole fraction of .78 for nitrogen

    asked by Johannie on September 20, 2010
  25. Statistics

    College officials want to estimate the percentage of students who carry a gun, knife, or other such weapon. How many randomly selected students must be surveyed in order to be 94% confident that the sample percentage has a margin of error of 2 percentage

    asked by Richelle on March 30, 2015
  26. Chemistry

    1) When calcium is reacted with cold water, the equation is as follows: - Ca(s) + H2O(l) -->Ca(OH)2(aq) + H2(g) Isn't Ca(OH)2 insoluble? Why is the state symbol aqueous? When I conducted the experiment in a test tube with cold water, I got a white

    asked by candy on January 31, 2009
  27. science:chemistry

    magnesium trioxocarbonate (IV) decomposed according to the equation MgCO3(s) -MgO2(s) + CO2(g).if 6.0g of magnesium trioxocarbonate (IV) is completely decomposed ,calculate :i. the mass of carbon (IV) oxide produced

    asked by michael on April 6, 2016
  28. Chemistry

    A mixture of nitrogen gas and hydrogen gas reacts in a closed container to form ammonia gas. The reaction ceases before either reactant is completely consumed. At this stage the container has 3.0 mol each of all three gases; nitrogen, hydrogen and ammonia.

    asked by Blair on June 29, 2013
  29. Chemistry

    Hydrochloric acid reacts with Magnesium to form Magnesium Chloride and Hydrogen gas. deltaH= -442kJ If 15mL of 1.0M HCl reacts with .3g of Mg, how many L of H2 are produced? How much heat is produced?

    asked by Taylor on December 8, 2010
  30. chemistry

    What would be the mass of a bag of anhydrous magnesium sulfate, MgSO4, if it contained the same amount of magnesium as a 1.00kg bag of Epsom salts, MgSO4 x 7H2O? Give your answer in grams. please help

    asked by Jess on April 11, 2011
  31. Chemistry

    Assuming an efficiency of 46.80%, calculate the actual yield of magnesium nitrate formed from 147.9g of magnesium and excess copper(II) nitrate. Mg + Cu(NO3)2 --> Mg(NO3)2 + Cu I can't figure out how to even set this up much less solve it...

    asked by Alexis on February 23, 2016
  32. Chemistry

    What would be the mass of a bag of anhydrous magnesium sulfate, MgSO4, if it contained the same amount of magnesium as a 1.00kg bag of Epsom Salts, MgSO4 . 7H2O?

    asked by Marty on October 23, 2007
  33. Physics

    Three liters of nitrogen combine with 9 L of hydrogen to form 6 L of ammonia. If the molecules of nitrogen and hydrogen have two atoms each, how many atoms of hydrogen and nitrogen are there in one molecule of ammonia? ____ atoms of hydrogen ____ atoms of

    asked by Katelyn on November 7, 2016
  34. physics

    Three liters of nitrogen combine with 9 L of hydrogen to form 6 L of ammonia. If the molecules of nitrogen and hydrogen have two atoms each, how many atoms of hydrogen and nitrogen are there in one molecule of ammonia? ____ atoms of hydrogen ____ atoms of

    asked by Katelyn on November 6, 2016
  35. chemistry

    How many MOLES of oxygen are present in 6.56E+22 molecules of nitrogen monoxide How many ATOMS of nitrogen are present in 1.79 moles of nitrogen monoxide ?

    asked by Anonymous on January 30, 2012
  36. physics

    Азот был нагрет при неизменном давлении. Масса азота равна 280 г, количество затраченного тепла равно 600 Дж и Сv = 750 Дж/(кг.К). Найти повышение

    asked by lisa on May 29, 2011
  37. Chemistry

    Ammonia is composed of hydrogen and nitrogen in a ratio of 9.33 g of nitrogen and 2.00 g of hydrogen. if a sample of ammonia contains 6.28 g of hydrogen, how many grams of nitrogen does it contain?

    asked by Kelsey Walenciak on September 9, 2016
  38. percentages

    Hi I want to know what one amount is a percentage of another example what is 0.74 and a percentage of 4.91 thanks What is the percentage of .74 of 4.01? percent= .74/4.02 * 100 Thank You !!!!!!

    asked by ron on October 2, 2006
  39. Chemistry

    Provided with enough heat, magnesium and oxygen can undergo a synthesis reaction. How much magnesium oxide is produced if 50g of Mg is reacted with 50g of oxygen?

    asked by Tarkan on November 8, 2010
  40. Chemistry grd 11

    Provided with enough heat, magnesium and oxygen can undergo a synthesis reaction. How much magnesium oxide is produced if 50g of Mg is reacted with 50g of oxygen?

    asked by Tarkan on November 9, 2010
  41. chemistry

    What is the molarity of each kind of ion in a solution of magnesium chloride that contains 29.0 g of magnesium chloride dissolved in enough water to make 1.73 L of solution? MgCl2 Mg2+ + 2 Cl-

    asked by megan on April 25, 2012
  42. Chemistry grd 11

    Provided with enough heat, magnesium and oxygen can undergo a synthesis reaction. How much magnesium oxide is produced if 50g of Mg is reacted with 50g of oxygen?

    asked by Tarkan on November 9, 2010
  43. chemistry

    in an experiment, 24g of magnesium metal reacts with 73g of hydrogen chloride solution to produce hydrogen gas and 95g of magnesium chloride. Write the word, skeletal and balance eqautions

    asked by Anonymous on October 3, 2014
  44. HEalth

    how much carboydrates we need in percentage in a day how much Fats we need in a day in percentage Why do we need fat how much percentage of protein we need what is complex carbohydreates

    asked by ZUICK on October 20, 2011
  45. Chemistry

    A 0.250g smaple of magnesium-aluminum alloy dissolves completely in an excess of HCl(aq). When the liberated H2(g) is collected over water at 29C at 752torr, the volume is found to be 297mL. The vapor pressure of water at 29C is 30.0torr. What is the mass

    asked by Cynthia on October 10, 2011
  46. Chemistry

    An aqueous solution of ammonium nitrite decomposes when heated to give off nitrogen gas and water. This reaction can be used to prepare pure nitrogen gas. How many grams of ammonium nitrite must have reacted if 3.75 liters of nitrogen gas was collected

    asked by Sean on October 20, 2014
  47. Physics

    A plastic bag is filled with nitrogen at atmospheric pressure and 22.0 oC. Assume that the mass of the bag is negligible and take the temperature of the outside air to be 0 oC. With the help of this "balloon" we want to lift a 50.0 kg girl off her feet.

    asked by Anonymous on December 2, 2014
  48. Physics

    A plastic bag is filled with nitrogen at atmospheric pressure and 22.0 oC. Assume that the mass of the bag is negligible and take the temperature of the outside air to be 0 oC. With the help of this "balloon" we want to lift a 50.0 kg girl off her feet.

    asked by Anonymous on December 3, 2014
  49. physics

    A plastic bag is filled with nitrogen at atmospheric pressure and 22.0 oC. Assume that the mass of the bag is negligible and take the temperature of the outside air to be 0 oC. With the help of this "balloon" we want to lift a 50.0 kg girl off her feet.

    asked by Anonymous on December 2, 2014
  50. Physics

    A plastic bag is filled with nitrogen at atmospheric pressure and 22.0 oC. Assume that the mass of the bag is negligible and take the temperature of the outside air to be 0 oC. With the help of this "balloon" we want to lift a 50.0 kg girl off her feet.

    asked by Anonymous on December 3, 2014
  51. Physics

    A plastic bag is filled with nitrogen at atmospheric pressure and 22.0 oC. Assume that the mass of the bag is negligible and take the temperature of the outside air to be 0 oC. With the help of this "balloon" we want to lift a 50.0 kg girl off her feet.

    asked by Anonymous on December 2, 2014
  52. Chemistry

    Henry constant for the dissolving of nitrogen in water was reported as 7e-4 mol/Latm at 20 deg Celsius. What is the value of the equilibrium constant, K, at 20 deg Celsius for the process N2(g0)=N2(aq). If the amount of nitrogen in aqueous solution is .1

    asked by Anonymous on January 31, 2014
  53. Chemistry

    Henry constant for the dissolving of nitrogen in water was reported as 7e-4 mol/Latm at 20 deg Celsius. What is the value of the equilibrium constant, K, at 20 deg Celsius for the process N2(g0)=N2(aq). If the amount of nitrogen in aqueous solution is .1

    asked by Anonymous-PLEASE HELP!! on February 3, 2014
  54. Chemistry

    When 2 mol of solid magnesium (Mg) combines with 1 mole of oxygen gas (O2), 2 mol of solid magnesium oxide (MgO) is formed and 1204kJ of heat is released. Write the thermochemical equation for this combustion reaction.

    asked by Kim on May 20, 2010
  55. Chemistry

    When .1625 g of Magnesium is burned in a bomb container that has a heat capacity of 3.03 kJ/ºC, the temperature increases by 1.252 ºC. How much heat (kJ/mol) is liberated during the burning of magnesium? Just want to make sure I am doing this correctly:

    asked by Anon on March 23, 2017
  56. chemistry

    Assuming a yield of 26.10 percent calculate the actual yield of magnesium nitrate formed from 42.2 g of magnesium and excess copper(ii) nitrate .

    asked by Shania on August 12, 2017
  57. chemistry

    What is the molarity of each kind of ion in a solution of magnesium chloride that contains 86.0 g of magnesium chloride dissolved in enough water to make 2.37 L of solution? M Mg2+ M Cl-

    asked by kim on May 1, 2012
  58. statistics

    Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: Suggest you make a drawing and label first… a.Percentage of scores less than

    asked by Kim on June 8, 2010
  59. Chemistry

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.6 L of water upon warming from 25 C to 50 C. Assume that the water is initially saturated with nitrogen and oxygen gas at

    asked by RE on September 18, 2009
  60. science

    What elements does the compound MgCL2, magnesium chloride, contain? A. Chloride only B. Magnesium only C. M

    asked by stephanie on November 10, 2011
  61. Chemistry

    How many moles of magnesium chloride are in 5.43 x 10^24 formula units of magnesium chloride?

    asked by Bree on October 18, 2016
  62. physics

    The speed of propagation of a sound wave in air at 27 degrees Celsius is about 350 m/s. Calculate, for comparison, v_rms for nitrogen (N2) molecules at this temperature. The molar mass of nitrogen is 28.0 g/mol.

    asked by Jen on November 16, 2007
  63. Physics

    A compound known as cubic boron nitride has a similar structure to that of. A diamond .wat properties do u expect it to have??

    asked by Jessica on December 3, 2012
  64. chemistry URGENT!

    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 mia on October 25, 2010
  65. Science

    Three liters of nitrogen combine with 9 L of hydrogen to form 6 L of ammonia. If the molecules of nitrogen and hydrogen have two atoms each, how many atoms of hydrogen and nitrogen are there in one molecule of ammonia?

    asked by Kayla on February 24, 2015
  66. physics

    Two liters of nitrogen combine with 6 L of hydrogen to form 4 L of ammonia. If the molecules of nitrogen and hydrogen have two atoms each, how many atoms of hydrogen and nitrogen are there in one molecule of ammonia?

    asked by Ashley on November 22, 2013
  67. CHEMISTRY

    Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert

    asked by Allie on September 30, 2013
  68. CHEMISTRY

    Given that Mg(ClO3)2 decomposes into magnesium chloride and oxygen: A) Write a balanced equation for this reaction. I got Mg(ClO3)2 yields MgCl2 + 3 O2 Is that right? B) If 0.302 grams of O2 is lost from 1.890 grams of a mixture of Mg(ClO3)2 and an inert

    asked by Allie on September 30, 2013
  69. Chemistry

    A mixture of the compounds magnesium oxide and calcium sulfide contains 21.6999 g of magnesium oxide and is 51.3 % by mass magnesium oxide. The compound calcium sulfide is 44.400 % by mass sulfur. Calculate the moles of sulfur in the mixture. I'm not sure

    asked by Lance on April 4, 2012
  70. chemisty

    When magnesium metal and an aqueous solution of hydrochloric acid combine, they produce an aqueous solution of magnesium chloride and hydrogen gas. Using the equation, Mg (s) + 2HCl (aq) MgCl2 (aq) + H2 (g), if 24.3 g of Mg and 75.0 g of HCl are allowed to

    asked by kim on November 17, 2013
  71. ap chemistry

    Jeff and Jill go canoeing. While reaching to feed a duck, the boat flips. Jeff and Jill blow up their inflatable life preservers and then put them on. As they wait for the rescue squad, they calculate how much nitrogen is in each life preserver. They

    asked by cheri on February 10, 2013
  72. Sociology (Stats) Std. Dev

    Given (μ) = 500, and σ = 100. What percentage of the SAT scores falls: A) Between 500 and 600? The percentage falls 1 σ above the (μ), 68.26% / 2 = 34.13% B) Between 400 and 600? The percentage falls 1 σ below and 1 σ above the (μ) C) Between 500

    asked by Taylor on October 8, 2014
  73. chemistry

    Liquid nitrogen-powered car students at the university of north Texas and the university of Washington built a car propelled by compressed nitrogen gas. The gas was obtained by boiling liquid nitrogen stored in a 185.0 L tank what volume of N2 is released

    asked by Alex on March 5, 2012
  74. excel graphing

    In column F (cell ranges F5:F16), use an appropriate formula to calculate the percentage of the grand total for each type of office supply. Format the results in the Percentage style. If necessary, decrease the decimal places to round the results to the

    asked by kayla on May 31, 2011
  75. chem

    an 18.9g sample of copper and an 82.0 mL of 16.0mol/L nitric acid are allowed to react. Brown nitrogen dioxide gas is generated. find the maximum mass of NO2 that could be produced. if 22.6g of the gas is actually produced, find the percentage yield of the

    asked by brainfried on February 15, 2016
  76. Chemistry

    Consider the reaction of magnesium metal with hydochloric acid to produce magnesium chloride and hydrogen gas. If 3.85 mol Mg and 3.85 mol of HCl are reacted, how many mol of oxygen are left over? I balanced the equation and got Mg(OH)2+2HCl=MgCl2+2H2O.

    asked by Jessica on March 20, 2012
  77. chemistry

    When magnesium metal and an aqueous solution of hydrochloric acid combine, they produce an aqueous solution of magnesium chloride and hydrogen gas. Using the equation, Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (g), if 48.6 g of Mg and 150.0 g of HCl are

    asked by Kyra on July 8, 2014
  78. Chemistry

    How do you calculate the molar masses for Strontium Phosphate and Chromium(III)Nitride using significant figures correctly?

    asked by Katie on January 4, 2010
  79. chemistry

    in a compound of nitrogen and oxygen, 14.0 grams of nitrogen combines with 32.0 grams of oxygen. How much oxygen is required to combine with a sample of 10.5 grams of nitrogen in producing same compound? How do you do the math?

    asked by Don on June 6, 2011
  80. chemistry

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.8 of water upon warming from 25degree C to 50degree C . Assume that the water is initially saturated with nitrogen and

    asked by bf on January 25, 2010
  81. physics

    if 3e charge is at the origin and magnesium nucleus is 3cm fom thr origin in the x-axis. what is the magnitude of the net electrostatic force a Boron nucleus would experience at a point half way between magnesium nucleus and 3e.

    asked by james on November 10, 2013
  82. chem

    You mix 5.32 g of solid magnesium sulfate with 105.24 g of water inside a calorimeter. As the magnesium sulfate dissolves, the temperature of the solution rises from 24.5°C to 30.1°C. Calculate the amount of energy in kJ that was transferred into the

    asked by Anonymous on November 12, 2015
  83. chem

    consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are

    asked by julia on November 16, 2010
  84. chem

    consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are

    asked by julia-Drboob22 on November 15, 2010
  85. chem/DrBob22

    consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are

    asked by julia on November 15, 2010
  86. Chemistry

    A solution is made by mixing 90.6 g of magnesium sulfate heptahydrate with 2320.0 g of water. 690.00 mL of the solution has a mass of 745.20 g. What is the molarity of the magnesium sulfate solution?

    asked by Jade on September 12, 2013
  87. Intro to Chem

    24.3 g of magnesium yield 40.3 g MgO upon combustion with oxygen. How much magnesium needs to be burned to yield 12.1 g MgO? Please help! I can't figure this out. Little guidance here!

    asked by Kimmy on January 7, 2016
  88. chem

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.2L of water upon warming from 25C to 50C . Assume that the water is initially saturated with nitrogen and oxygen gas at

    asked by rc on January 26, 2010
  89. Chemistry

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.5L of water upon warming from 25C to 50C . Assume that the water is initially saturated with nitrogen and oxygen gas at

    asked by Anonymous on May 9, 2015
  90. chem 102

    Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.1L of water upon warming from 25 ∘C to 50 ∘C. Assume that the water is initially saturated with nitrogen and oxygen

    asked by ieshia on February 19, 2014
  91. Science

    Some nitrogen atoms have seven neutrons and some have eight neutrons. These two forms of nitrogen are: a. ions of each other b. phases of each other c. isotopes of each other and how exactly do you know? My book doesn't cover this at all yet its in my

    asked by carl on February 5, 2013
  92. Physics

    Do the electrons in an ion of nitrogen (such as N+ or N+2) have exactly the same permitted energy levels the electrons in a neutral nitrogen atom, and therefore, same absorption and emission lines?

    asked by Mohammed on March 5, 2017
  93. CHEMISTRY

    A garden fertilizer contains 15% by mass of nitrogen. The recommended usage is 30g of fertilizer per 10dm^3 of water. What is the concentration of nitrogen in this solution? a)0.15 g dm^-3 b)0.30 g dm^-3 c)0.45 g dm^-3 d)3.00 g dm^-3

    asked by Claudia on October 20, 2013
  94. CHEMISTRY

    A lawn fertilizer is rated as 6.50% nitrogen, meaning 6.50 g of N in 100 g of fertilizer. The nitrogen is present in the form of urea, (NH2)2CO. How many grams of urea are present in 100 g of the fertilizer to supply the rated amount of nitrogen?

    asked by Annie on March 7, 2014
  95. Chemistry

    14) A lawn fertilizer is rated as 7.04% nitrogen, meaning 7.04 g of N in 100 g of fertilizer. The nitrogen is present in the form of urea, (NH2)2CO. How many grams of urea are present in 100 g of the fertilizer to supply the rated amount of nitrogen?

    asked by Luke on July 1, 2014
  96. chemistry

    Nitrogen forms five compounds with oxygen in which1.0g of nitrogen combines with0.572,1.14,1.73,2.28,2.85 of oxygen respectively. verify law of multiple proportions.

    asked by gurlabh on July 1, 2015
  97. Chem

    A sample of nitrogen (N2) gas has a volume of 250ml at 30 degrees C and a pressure of 745mmHg. What is the volume of the nitrogen at STP? I got 22 liters in significant figures is this right. thank you.

    asked by Lindsay on November 24, 2010
  98. Chemistry 11th Grade

    Nitrogen forms five compounds with oxygen in which 1.0 g of nitrogen combines with 0.572,1.14,1.73,2.28 and 2.85 g of oxygen respectively. Show that these figures agree with law of multiple proportion.

    asked by Akashdeep on May 3, 2010
  99. chemistry

    A 5.02 L sample of nitrogen dioxide gas is collected at 500°C and 5.00 atm. What is the volume of nitrogen dioxide at standard condition?

    asked by Deanna on August 5, 2010
  100. physics

    A storage tank at stp contains 18.5kg of nitrogen. What is the volume of the tank and what would the pressure be if you added another 15kg of nitrogen at the same temperature?

    asked by Mark on April 19, 2011