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Calcium oxide can be prepared by heating calcium metal in oxygen according to the reaction: 2Ca+ O(2) --> 2CaO. How many grams of calcium would be needed to produce 15.0 grams of calcium oxide?

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  1. Chemistry

    Calcium oxide can be prepared by heating calcium metal in oxygen according to the reaction: 2Ca+ O(2) --> 2CaO. How many grams of calcium would be needed to produce 15.0 grams of calcium oxide?
  2. Chemistry

    Many metals react with oxygen gas to form the metal oxide. For example calcium reacts: 2Ca(s) + O2(g)--> 2CaO(s) Calculate the mass of calcium prepared from 4,20g of Ca and 2.80g of O2. (a) How many moles of CaO can form from the given mass of Ca? (b) How
  3. Chemistry

    Many metals react with oxygen gas to form the metal oxide. For example calcium reacts: 2Ca(s) + O2(g)--> 2CaO(s) Calculate the mass of calcium prepared from 4,20g of Ca and 2.80g of O2. (a) How many moles of CaO can form from the given mass of Ca? (b) How
  4. Science

    Lucy heats some calcium carbonate. She weighs the reaction vessel at the start of the reaction and again after it has been heated. Calcium carbonate decomposes into calcium oxide and carbon dioxide. Look at Lucy’s results: Mass of calcium carbonate
  5. Physical Science

    Calcium oxide and carbon dioxide combine to form calcium carbonate in the reversible reaction: CaO + CO2 ⇌ CaCO3 When the reaction is at dynamic equilibrium, which statement must be true? Calcium carbonate and calcium oxide are formed at the same rate.
  6. Chemistry

    When 28g calcium reacts with 25 grams oxygen, how many grams calcium oxide form? I have 2Ca+ 2O2= 4CaO its is not working. Stoichemistry. I have the Ca as the reactant that is limiting? Please help.
  7. CHEM 1A

    Can someone please help me..... I have limited reactant formula problem. I am completely lost. 2Ca(s) + O2(g) ----> 2CaO(s) Calculate the mass of Calcium Oxide that can be prepared from 6.87g of Ca and 4.58g of O2. I calculated 2Ca to .171mol and O2 to
  8. Chem 111

    2Ca(s)+O2(g)--->2CaO(s) Calculate the mass of calcium oxide that can be prepared from 8.99 g of Ca and 5.99 g of O2.
  9. Chemistry

    2Ca(s) + O2(g) → 2CaO(s) Calculate the mass of calcium oxide that can be prepared from 7.52 g of Ca and 5.01 g of O2.
  10. chemistry

    How many grams of calcium oxide, CaO, can be produced from 4.20 g of calcium metal and 1.60 g of oxygen gas?
  11. chemistry

    Calcium metal is heated with oxygen gas to yield calcium oxide.
  12. Chemistry

    Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide
  13. Chemistry

    Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide
  14. Chemistry

    Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide
  15. Chemistry

    Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8.35 grams. When heated strongly, the CaCO3 in the sample decomposes into solid CaO and carbon dioxide
  16. chemistry

    10. If the calcium oxide were obtained by the heating of calcium hydroxide, how much hydroxide would be needed to obtain the 15.0 g? 11. If the 15.0 g of calcium oxide in the above problems were allowed to react with water, what amount of calcium hydroxide
  17. chemistry

    if 100g of calcium carbonate on heating produces 44g of carbon dioxide,how much calcium oxide will be formed?
  18. chemisty

    Calcium carbonate can be decomposed by heating according to the equation Below. WHat is the percentage yield of calcium oxide in this reaction if 12.6g of CaO is obtained when 25.9g of CaCO3 is heated ? CaCO3(S) -> CaO (s) + CO2 (g)
  19. science

    1. what weight in grams of magnesium oxide will produce from burning 96 grams of magnesium? 2. a solution containing 252g of calcium sulfate will produce from 165lbs of phosphate rocks containing 82.5 % pure calcium phosphate treated with sulfuric acid? 3.
  20. science

    Ammonia gas can be prepared by the reaction of a metal oxide such as calcium oxide with ammonium chloride. CaO(s) + 2 NH4Cl(s) 2 NH3(g) + H2O(g) + CaCl2(s) If 199 g of CaO and 300. g of NH4Cl are mixed, what mass of NH3can be produced?
  21. Chemistry

    Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work:
  22. Chemistry

    Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work:
  23. Chemistry

    When calcium oxide and coke are heated in a electric furnace, the products are carbon ii oxide and calcium carbide (CaC2), write the the equation for this reaction.
  24. Chemistry

    When calcium oxide and coke are heated in a electric furnace, the roducts are carbon (ii) oxide and calcium carbide (CaC2), write the equation for this reaction.???
  25. Chemistry

    If 3.00 mol of calcium carbonate is heated to produce calcium oxide and carbon dioxide, how many grams of calcium oxide are produced?
  26. Chemistry

    If 3.00 mol of calcium carbonate is heated to produce calcium oxide and carbon dioxide, how many grams of calcium oxide are produced?
  27. science

    1.3 mol of calcium carbonate decomposed to calcium oxide and carbon dioxide. How many grams of calcium oxide is produced?
  28. Chemistry

    Calcium oxide (quicklime) reacts with water to produce calcium hydroxide (slaked lime). CaO(s) + H2O(l) Ca(OH)2(s) ÄH = -65.2 kJ The heat released by this reaction is sufficient to ignite paper. How much heat is released when 29.0 g of calcium oxide
  29. chemistry

    A sample being given as a laboratory unknown is a mixture of calcium carbonate and magnesium carbonate. Both substances decompose to form calcium oxide and magnesium oxide, respectively, when heated at a high temperature for a prolonged period. An unknown
  30. Chemistry

    100g of calcium carbonate was decomposed by heating to produce 45g of calcium oxide and carbon dioxide, using the equation given, calculate the Percentage Yield of Calcium Carbonate. CaCO3 -------> CaO + CO2 Please help me i tried working out but kept on
  31. Chemistry

    Calcium carbide, CaC2, can be produced in an electric furnace by strongly heating calcium oxide (lime) with carbon. The unbalanced equation is CaO(s) + C(s) �¨ CaC2(s) + CO(g) Calcium carbide is useful because it reacts readily with water to form the
  32. chemistry

    Calcium oxide and carbon are reacted to produce carbon monoxide and calcium carbide CaC2. When one mole of calcium carbide is formed, 464.8kJ is absorbed. What is the enthlapy of reaction when 1.00g of calcium carbide is formed?
  33. Chem Help!

    I really need help for my homework on how to write the balanced equation for the following reactions. 1) Sodium reacts with iron(lll)oxide to produce sodium oxide and iron. Type of reaction: Balanced Equation: 2) Hydrogen bromide forms from hydrogen and
  34. CHEMISTRY

    the correct name for the compound with the formula CaS04 IS A.]CALCIUM SULFUR OXIDE B.]CALCIUM SULFIDE C.}CALCIUM SULFATE D.}CALCIUM SULFUR TETROXIDE I will be happy to critique your thinking on this.
  35. Chemistry (w.e or DrBob222)

    Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work: 4CaCO3(s) + Al2(SiO3)3(s) → CaO(s)
  36. chemistry

    Calcium carbonate, CaCO3, when heated decomposes to calcium oxide and carbon dioxide. Calculate the mass of calcium oxide formed when 2.0 grams of CaCO3 is decomposed.
  37. intro to chemistry (college)

    A 64.8 g mixture of the compounds potassium sulfide and calcium oxide is 17.1 % by mass potassium sulfide. The compound calcium oxide is 71.5 % by mass calcium. Calculate the mass (g) of oxygen in the mixture. mass % = mass part/mass whole x 100. I
  38. chemistry

    If calcium oxide is added to sea water a number of changes occur. first calcium oxide reacts with water to form calcium hydroxide. What is the equations
  39. chemistry

    Calcium oxide and carbon are reacted to produce carbon monoxide and calcium carbide CaC2. When one mole of calcium carbide is formed, 464.8kJ is absorbed. Write a thermochemical equation for this reaction.
  40. Chemistry

    If calcium carbonate) and aluminum silicate are mixed together and heated then the result is cement. Cement is a mixture of calcium oxide, carbon dioxide, aluminum oxide, and calcium silicate. Write the balanced equation for this reaction. My Answer:
  41. chemistry

    find mass of calcium carbonate obtaqined in reaction of 10.0g of calcium oxide with an excess of carbon dioxide
  42. chemistry

    how much calcium oxide is recovered when 250 g calcium hydroxide are heated given the following reaction? Ca(OH)2 arrow CaO + H2O
  43. Chemistry

    calcium carbonate decomposes if heated to form calcium oxide and carbon dioxide. if 24.5 grams of calcium carbonate decompose how many moles of calcium carbonate reacted?
  44. science

    Consider the following reaction: CaCO3(s) --> CaO(s) + CO2(g) A mixture of calcium oxide (CaO) and calcium carbonate (CaCO3) had a mass of 15.08 g and was heated to above 840 oC. After heating, 9.83 g of solid was left. What is the mass percentage of
  45. Chemistry

    1. Hydrogen gas combines with oxygen gas to yield water. if 15 g O2 is present in the reaction, compute how much water will be produced. 2. Ten (10)grams methane gas combines with oxygen gas to form water and carbon dioxide. How much water is produced from
  46. Chemistry

    When coal is burned, the sulfur it contains is converted into sulfur dioxide. This is SO2 is a serious pollutant, so it needs to be removed before it escapes from the stack of a coal fired plant. One way to remove the SO2 is to add limestone, which
  47. chemistry (science)

    When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction CaCO3 ---> CaO + CO2 How many grams of calcium carbonate are needed to produce 73.0 of carbon dioxide at STP?
  48. Chemistry

    What volume of carbon dioxide is produced when 0.979 mol of calcium carbonate reacts completely according to the following reaction at 0oC and 1 atm? calcium carbonate (s)---> calcium oxide (s) + carbon dioxide (g) Should I use the ideal gas law?
  49. Chemistry 1201

    When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction CaCO3(s)->CaO(s)+CO2(g) What is the mass of calcium carbonate needed to produce 53 L of carbon dioxide at STP?
  50. Chemistry-Please help

    When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction CaCO3(s)---->CaO(s)+CO2(g) How many grams of calcium carbonate are needed to produce 59.0L of carbon dioxide at STP?
  51. chemistry

    When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction \rm CaCO_3{\it(s)}\rightarrow CaO{\it(s)}+CO_2{\it(g)} How many grams of calcium carbonate are needed to produce 53.0 L of carbon dioxide at STP?
  52. Chemistry

    Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: A 2.00-g sample of is reacted with 1.93 g of . How many grams of water remain after the reaction is complete? 0.0714 1.29 0.00 1.04 0.00396
  53. chemistry 1

    When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas via the reaction How many grams of calcium carbonate are needed to produce 49.0 of carbon dioxide at STP?
  54. Chemistry

    A mass of 37.5 grams of mercury oxide is decomposed by heating. The reaction is 2HgO > 2Hg + O2. A. How many moles of mercury oxide is decomposed? B. How many moles of oxygen are prepared? C. How many grams of oxygen are prepared?
  55. 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 by
  56. chemistry

    When 11.0 g of calcium metal is reacted with water, 5.00 g of calcium hydroxide is produced. Using the following balanced equation, calculate the percent yield for the reaction? Ca(s) + 2 H2O(l) → Ca(OH)2(aq) + H2(g) 84.0% 12.3% 45.5% 24.6%
  57. chemistry

    calcium metal (Ca) can be produced by passing an electric current through molten calcium chloride. chlorine gas is also formed. what is the balanced equation for this reaction
  58. science

    what happens when you mix calcium with oxygan Generally, one could expect Calcium Oxide (CaO) to form. In the presence of water, Calcium hydroxide will form.
  59. Chemistry

    A sample of calcario and other components of the soil was intensely warm. Under these conditions, the calcario undergoes decomposition in calcium oxide and carbon dioxide. CaCO3 (s)-> CaO (s) + CO2 (g) The analysis of 71, 42 g of a sample of limestone
  60. Chemistry

    In the following reaction, 28 grams of Calcium Oxide CaO reacts with Carbon Dioxide CO2 to produce Calcium Carbonate CaCO3. How much Calcium Carbonate is produced? CaO+CO2 ---> CaCO3
  61. Chemistry

    Calcium carbonate decomposes on heating producing potassium nitrate and oxygen. Write a balanced equation for this reaction. Heating 100g of pure potasium nitrae what mass of potassium nitrate would be produced?
  62. chem

    When solid calcium is placed in water, it undergoes a vigorous reaction that produces solid calcium oxide, CaO(s) and hydrogen gas. determine the volume of dry hydrogen gas that is produced when 5.00 g of calcium reacts and the gas is collected at 42
  63. chemistry

    a.Given the equation: 2CaCO3 + 2SO2 + O2 -> 2CaSO4 + 2CO2 What is the actual yield of CO2 if 7.5 mol of O2 gives a percent yield of 80%? b. The pollutant sulfur dioxide can be removed from the emissions of an industrial plant by the reaction with calcium
  64. Chemistry

    Hello! I am having a little difficulty answering these two questions on my homework, I was wondering if anyone could please help me out! Thank you! 1) Consider the following balanced chemical equation for the neutralization reaction of calcium hydroxide
  65. chemistry

    calcium oxide reacts with water and with nitric acid. State the formula of the calcium compund when: (i) calcium oxide reacts with water (ii) calcium oxide reacts with nitric acid
  66. Chemistry

    1)The following balanced chemical equation represents the reaction of calcium carbonate CaCO3 (s), with hydrochloric acid : CaCo3(s) + 2HCl (aq) -> CaCl2(aq) + CO2(g) + H2O(l) If 155 g of calcium carbonate reacts with 245 g of hydrochloric acid, what mass
  67. Chemistry

    The student wanted to be sure he had made Calcium Oxide. He crushed some heated limestone and added water. The mixture got hot. The student cooled the mixture and filtered it. This gave a colourless solution and a white solid that was left in the filter
  68. chemistry12

    Calcium carbonate, CaCO3, when heated decomposes to calcium oxide and carbon dioxide. Calulate the mass of clacium oxide formed when 2.0 grams of CaCO3 is decomposed.
  69. chemistry12_2016

    Calcium carbonate, CaCO3, when heated decomposes to calcium oxide and carbon dioxide. Calulate the mass of clacium oxide formed when 2.0 grams of CaCO3 is decomposed.
  70. joint heirs college, Fola agoro, shomolu Lagos.

    CHEMISTRY (1) What is the equation for reaction when calcium oxide and coke are heated in electric furnace (2) what solid remains when the following is heated-(a) lithium trioxonitrate (v), (b) potassium trioxonitrate (v), (c) calcium trioxonitrate (v).
  71. chemistry

    Calcium carbonate and sulfuric acid react according to the balanced reaction. CaCO3+ H2SO4 = CaSO4 + CO2 + H2O Starting from 300 grams of calcium carbonate with 3% impurities, what is the mass of calcium sulfate formed considering that the reaction is 90%
  72. Chemistry

    Joseph Priestly discovered oxygen when he heated a red powder. This red powder had been prepared by heating mercury in air. a) name th red powder formed when this element is heated in air b) write a word equation to show what happens to this red powder
  73. chemistry

    the recommended daily allowance of calcium is 1.2 g. calcium carbonate contains 12.0 % calcium by mass. how many grams of calcium carbonate are needed to provide the rda of calcium
  74. Chemistry

    Some solid calcium oxide in a test tube picks up water vapor from the surrounding to change completely into solid calcium hydroxide. An observed total initial weight (calcium oxide + test tube) f 10.860g goes eventually to 11.149g. What is the weight of
  75. Science

    What is the solid remaining when lithium trioxonitrate5,potassium trioxonitrate5 and calcium trio xonitrate5 are heated Equation of reaction when calcium oxide and coke are heated in an electric furnace
  76. chem

    a student paid little attention to the size of his burner flame while heating a 0.979 gram sample of calcium oxalate monohydrate. The final mass of the cooled solid was 0.670 gram. Was the reaction product anhydrous calcium oxalate?
  77. chemistry

    Uranium metal can be produced by reaction of uranium tetrafluoride (UF4) with calcium metal (Ca). The by-product of this reaction is calcium fluoride (CaF2). The reactor is charged with 292.0 kg of UF4 and 47.0 kg of calcium. Assume that the reaction goes
  78. chemistry

    Determine the ratio of cations to anions for the following ionic compounds a. potassium, a salt substance b. calcium floride, used in steel industry c. aluminum oxide, known as corundum in the crystalline form d. calcium oxide, used to remove sulfur
  79. 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
  80. Science

    Calculate the mass of calcium carbonate which decomposes to produce: 50g of calcium oxide and 5g of carbon dioxide
  81. Chemistry

    I need some help with writing reactions. I have the following to write out: a. the hydration of copper sulfate b. the reaction of liquid sulfuric acid to form aqueous sulfuric acid c. the reaction of calcium oxide w/ water to form calcium hydroxide For a,
  82. chemistry

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  83. chemistry quick help!

    In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 4.19 grams of calcium chloride and the reaction goes to completion?
  84. Chem hwk

    In the balanced double replacement reaction of calcium chloride CaCl2 and aluminum sulfate Al2(SO4)3, how many grams of calcium sulfate can be produced if you start the reaction with 18.97 grams of calcium chloride and the reaction goes to completion?
  85. Chemistry

    When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas. How many grams of calcium carbonate are needed to produce 81.0 of carbon dioxide at STP? Is the asnwer 80.95
  86. chemistry

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  87. Chemistry

    On Earth, naturally occurring calcium metal contains 6 isotopes: Ca-40, Ca-42, Ca-43, Ca-44, Ca-46, Ca-48. Select all of the following that are true for a sample of naturally occurring calcium. A) The average mass of the calcium atoms is 40.078 amu. B)One
  88. chemistry

    Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO (s) + H2O (l) → Ca(OH)2 (s) In a particular experiment, a 1.00-g sample of CaO is reacted with excess water and 0.82 g of Ca(OH)2 is recovered. What is the
  89. chemistry

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  90. chemistry

    Calculate the standard entropy change for the reaction of calcium oxide with water to form calcium hydroxide: CaO(s) + H2O(ℓ) → Ca(OH)2(s) at 298 K. ∆S ◦ m ∆H◦ f J K·mol? kJ mol? CaO(s) 39.75 −635.09 H2O(ℓ) 69.91 −285.83 Ca OH 2(s) 83.39
  91. Science

    ionic compounds for the following: calcium chloride calcium oxide sodium oxide sodium carbonate aluminium carbonate calcium sulfate sodium nitrate sodium sulfate aluminium oxide aluminium hydroxide
  92. Science

    ionic compounds for the following: calcium chloride calcium oxide sodium oxide sodium carbonate aluminium carbonate calcium sulfate sodium nitrate sodium sulfate aluminium oxide aluminium hydroxide
  93. plz help now, chemistry

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  94. chemistry

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  95. Chemistry

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  96. chemistry

    A 0.500 L solution of 7.50 M hydrochloric acid is used to neutralize a 250.0 g sample of calcium hydroxide. Calcium chloride – a chemical used to control highway dust, strengthen concrete mixes, and add flavor to foods – is produced by the reaction. 2
  97. Chemistry

    A student prepared 200mL of 0.01M solution of calcium phosphate, Can(PO4)2. What is the concentration of calcium in parts per million? Relative atomic masses Can =40, P =31, O =16
  98. Chem!!!!!!

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  99. chemistry

    Although we tend to make less use of mercury these days because of the environmental problems created by its improper disposal, mercury is still an important metal because of its unusual property of existing as a liquid at room temperature. One process by
  100. chemistry

    Write and balance each of the following equations, and then identify each by type. a) copper+chlorine-->copper(ll)chloride b) calcium chlorate--->calcium chloride+oxygen c)lithium+water--->lithium hydroxide+hydrogen

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