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1. If 40g of Sodium (Na) completely reacts with 60g of Chlorine (Cl2), what is the mass of the products? O a О b • с O d 40 g
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2. Based on the percentages of components in Alka-Seltzer and the balanced equation above, determine the limiting reactant assuming
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3. If 2 grams of substance A react completely with 3 grams of substance B, what must be true about the products?2 A plus 1 B yields
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4. QUESTION 3 [24 marks]Question 3.1 2.50 g of hydrogen is reacted with 30.0 dm3 of carbon monoxide at STP. CO(g) +2H2(ℓ)
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5. Determine the number of moles of hydrochloric acid required to react with sodium thiosulphate of 0.66 molarity
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   2. asked by Allan shrewd
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6. A chemist mixes 53.8 g of carbon tetrachloride with 50.0 g of 2-ethyltoluene and 72.8 g of isopropenylbenzene.Calculate the
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7. Calculate the volume in milliliters of a 2.38M sodium thiosulfate solution that contains 50.0 g of sodium thiosulfate (Na2S2O3).
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8. If 1.01 mol of CO occupies 14.8 L, how many moles of CO will occupy a 73.9 L container at the same temperature and pressure?
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9. A 2,3 kg sample of iron oxide, Fe_2O_3, is added to 1,7 kg of Carbon monoxide, according to the following balanced equation :
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10. A solution was made by dissolving 0.524g of zinc metal in 20cm3 of 1.0moldm-3 HCL. If the resulting solution required 40cm3 of
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11. 5.0g of impure iron reacted completely with 75cm3 of 2.0 mlodm-3 hydrochloric acid to give a neutral solutionCalculate the
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12. The equation for the complete combustion of ethanol isC2H5OH1+3O2 ---- 2CO2+3H2O 5.0 mole of ethanol is completely burnt in
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13. 400cm3 of 2moldm-3 HCL were added to 50g of impure oyster shell, Calculate the percentage mass of impurity present
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14. Urea [(NH2)2CO] is prepared by reacting ammonia with with carbon dioxideIn the process 51g of NH3 are allowed to react with 176g
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15. 32.5g of zinc reacted with 200cm3 of 2moldm-3 of hydrochloric acid to produce hydrogen gasWhich of the reaction is the limiting
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16. Tetraphosphorus trisulphate,p4s3 used in match-heads is manufactured by heating phosphorus and sulphur above 100c if 12.0g
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17. If 150g of impure ribbon reacted with excess hydrochloric acid liberating 8.96dm3 of hydrogen gas at s.t.pCalculate the
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18. Calculate the number of chlorine atoms contained in 0.2g of DDT (C14H9Cl5)
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19. 5,0 moles of calcium hydroxide dissolved in 200ml of solution
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    2. asked by Alwaba Gogo
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20. 20,0ml of MgCl2 and 20,0g NACl are mixed together and dissolved in water to make up 2,00dm³ of solution.Calculate the
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    2. asked by Zoey
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21. CH3COOH(aq) +NAHCO3(s) - >CH3COONA(aq) +H2O(litre) +CO2(g)calculate the mass of the other substance in excess.
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22. Calculate the mass of (NaOH) that you must dissolve in 200 ml of solution to make a solution with a molar concentration of 6,4
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23. Write an equation to represent the neutralization of an aqueous solution of HI with an aqueous solution of LiOH. Be sure to
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24. What volume of oxygen at STP is needed for the complete combustion of 3,3 dm ^3 of propane (C3H8)(hint :CO2 and H2O are the
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25. What volume of oxygen at STP is needed for the complete combustion of 3,3 dm^3 of propane (C3H8)(hint :CO2 and H2O are the
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26. What volume of oxygen at STP is needed for the complete combustion of 3,3 dm^3 of propane (C3H8)(hint :CO2 and H2O are the
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27. A.WHAT MASS OF AGNO3 IS NEEDED TO CONVERT THE 2.33g OF NA2CO3 TO AG2CO3.B.WHAT MASS OF AG2NO3 WILL FORMED
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28. WHAT MASS OF AGNO3 IS NEEDED TO CONVERT THE 2.33g OF NA2CO3 TO AG2CO3
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29. Calculate the volume in milliliters of a 1.41 mol/, barium acetate solution that contains 375. mmol of barium acetate
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30. A chemist mixes 73.3 g of ethanol with 62.4 g of thiophene and 45.3 g of 2-ethyltoluene.Calculate the percent by mass of each
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31. How many grams of copper(II) sulfate pentahydrate (CuSO4 • 5H20) are needed to prepare 100.00 milliliters of a 0.70 M
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32. A form four student dissolved 9.57g of potassium chlonde and potassium carbonate in distilled water to make it half a litre of
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33. A chemist weighed out 6.73 g of tin. Calculate the number of moles of tin she weighed out.Round your answer to 3 significant
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34. A chemist determined by measurements that 0.050 moles of tin participated in a chemical reaction. Calculate the mass of tin that
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35. Calculate the density of 93.9 g of an isopropyl alcohol-water mixture (commercial rubbing alcohol) that has a volume of 98.6 mL.
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36. Suppose 1.5 g of Compound A are consumed in a reaction with 10.0 g of Compound B that produces only one product, Compound C.Calc
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37. How many moles of CaO are needed to react with excess water to produce 370g of calcium hydroxide?
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    2. asked by Lina
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38. Suppose 1.0 g of Compound A are consumed in a reaction with 5.5 g of Compound B that produces only one product, Compound C.Suppo
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39. Suppose 1.0 g of Compound A are consumed in a reaction with 5.5 g of Compound B that produces only one product, Compound C.Calcu
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40. Suppose 1.5 g of Compound A are consumed in a reaction with 9.0 g of Compound B that produces only one product, compound CSuppos
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41. Suppose 1.5 g of Compound A are consumed in a reaction with 9.0 g of Compound B that produces only one product, Compound C.Calcu
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42. Calculate the potassium ion in grams per litre after mixing 100 ml of 0.250 M kcl and 200 ml of 0.100 M K2SO4
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43. How many milliliters of concentrated sulphuric acid, 94.5% (g/100 g solution), density 1.831 g/cm3, are required to prepare 1
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44. How many milliliters of concentrated sulphuric acid, 94.5% (g/100 g solution), density 1.831 g/cm3, are required to prepare 1
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45. A chemist determines by measurements that 0.075 moles of hydrogen gas participate in a chemical reaction. Calculate the mass of
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46. A chemist measures the amount of nitrogen gas produced during an experiment. She finds that 83.5 g of nitrogen gas is produced.
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47. Calculate the mass of diphosphorus pentoxide (P_2O_5) that contains a trillion (1.0 × 10^12) oxygen atoms.Be sure your answer
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48. A chemist determined by measurements that 0.075 moles of barium participated in a chemical reaction. Calculate the mass of
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49. A chemist weighed out 1.36 g of mercury. Calculate the number of moles of mercury she weighed out.Be sure your answer has the
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50. 3g of impure Na2Co3 were made up to 250cm3 of solution .25cm3 required 21.0cm3 of 0.105M HCL for complete neutraiization a.write
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    2. asked by jasmine kassim
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51. QUESTION 5 (23 marks]Question 5.1 [4 marks] A 100 g sample contains 40% carbon, 6,7% hydrogen and 53,3% oxygen. Determine the
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52. Given the balanced equation representing a reaction:\[ 2 H_2 + O_2 \rightarrow 2 H_2O \] What is the mass of \[ H_2O \] produced
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53. 0.23g of volatile liquid occupies 126.4 cc at 27°c and 760 mm pressure,calculate the molecular mass of the liquid
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54. Calculate the moles of oxygen produced by reacting the carbon dioxide exhaled by a human in a day.
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55. 4NH3 +5O2 → 4NO +6H2OUsing the equation above,what is the limiting reagent and theoretical yield in grams of nitric oxide when
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56. This is the Steps for all of these problems shown below these are Limiting Reagent Rxn Problems- Go through all of them and tell
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57. This is the Steps for all of these problems shown below these are Limiting Reagent Rxn Problems- Go through all of them and tell
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58. This is the Steps for all of these problems shown below these are Limiting Reagent Rxn Problems- Go through all of them and tell
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59. This is the Steps for all of these problems shown below these are Limiting Reagent Rxn Problems- Go through all of them and tell
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60. This is the Steps for all of these problems shown below these are Limiting Reagent Rxn Problems- Go through all of them and tell
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61. Example: In a reaction of producing ClF3, 0.750 mol of Cl2 reacts with 3.00 mol of F2. Find the limiting reactant?
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    2. asked by Jeremiah latkuoth
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62. I need to prepare a stchiometically balanced solution of urea , Shulpuric acid and water in a molar ratio of 3.1:1:1 , how much
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63. 12. Using the balanced equation 2H(g)+O2(g)=2H2O(g), calculate how many grams of water would be produced from 4 mol of hydrogen
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    2. asked by answersss
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64. 11. Given a mole of each of the following substances, which one would weigh the most?* A. MgO B. CH4 C. CO2 D. CaO
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    2. asked by answersss
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65. 10. Which of the following is the correct calculation and answer to determine the mass of 4 moles of CH2O?* A. 4 mol x 16 g/mol
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    2. asked by answersss
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66. 5. A student measures out 200 grams of sodium flouride (NaF). How many moles would this be?* A. 200 g / 42 g = 4.76 moles B. 200
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    2. asked by answersss
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67. 4. In the balanced reaction Pb(NO3)2+2KI=PbI2+2KNO3 what is the ratio of potassium iodide (KI) to lead iodide (PbI2)?A. 3:1 B.
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    2. asked by answersss
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68. Use the following reaction. Remember to first check if it is balanced!N2+3H22NH3 nitrogen + hydrogen ammonia Complete the
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    2. asked by Your mom
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69. Use the following reaction. Remember to first check if it is balanced!N2+3H22NH3 nitrogen + hydrogen ammonia Complete the
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    2. asked by Your mom
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70. How many grams of bromine gas will be produced when 25.54 grams of silver bromide solid decomposes fully? Must show the correct
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71. How many grams of bromine gas will be produced when 25.54 grams of silver bromide solid decomposes fully? Must show the correct
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72. How many grams of bromine gas will be produced when 25.54 grams of silver bromide solid decomposes fully? Must show the correct
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73. How many moles are in 250.0 grams of KBr?
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74. How many moles are in 75.0 grams of CaCl2?
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75. How many moles are in 180.0 grams of H2O?
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76. What is the mass in grams of 2.3 moles of nitrogen gas (N2)?
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77. How many molecules are there in 2.15 mols of ammonium nitrate?How can I solve this? questions must be 2-5 Sentences, and include
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78. How many molecules are there in 2.15 mols of ammonium nitrate?Without using Avogadro's number, how can I solve this? questions
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79. How many molecules are there in 2.15 mols of ammonium nitrate?
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80. Question 1: How many grams of ammonium nitrate are there in 4.524 mols of the compound?__________ Question 2: How many molecules
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81. With ratio of 2:18 sodium phosphate to calcium chloride solution can the stoichiometry of the reaction between sodium phosphate
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82. How many moles of hydroxide ion would you expect to be in 500ml of household ammonia?
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83. Question 1: How many grams of ammonium nitrate are there in 4.524 mols of the compound?__________ Question 2: How many molecules
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84. What amount (in moles) of NH4CI is needed to prepare 275 mL of a 0.35 M ammonium chloride solution?
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85. Using this equation:K3P04 + AI(N03)3 - 3KN03 + AIP04 How many moles of potassium nitrate (KNO3) are produced when 67 grams of
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86. What is the mass of 11.7 moles of Be2(N03)2)
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87. Using this equation: C3H8 + 302 - 3C02 + 4H2How many moles of oxygen are necessary to react completely with 7.97 moles of
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88. What is the molarity of an HBr solution if 11.5 mL of a 0.26 M NaOH solution are needed to neutralize 20.0 mL of the sample?Part
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89. The mass of Fe produced from 10g of iron(111) oxide as shown from the balanced equation Fe2O3 + 3CO = 2Fe + 3CO2
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90. From the balanced equation of Fe2O3 + 3CO = 2Fe + 3CO, what is the volume of CO at s.t.p will be required to convert 200g of
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91. How many moles of C6H12O6 are contained in each volume of aqueous C6H1206 solution? Be sure each of your answer entries has the
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92. Given the balanced equation below, which mole ratio would be best for solving how many moles of oxygen are produced by the
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    2. asked by hunny
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93. How many millimoles of solute are contained in 250 ml of a solution that contains 4.20 ppm of CuSO4?* 1 point 0.00658 mmol 10.0
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    2. asked by Mo
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94. how many grams needs to the preparation of 1.000 L of 0.0500 M AgNO3 (169.87 g/mol) from the primary-standard-grade solid.* 1
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    2. asked by Mo
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95. A sample containing 0.2784 grams of sodium chloride (NaCl) and 0.5486 grams of magnesium chloride (MgCl2). The chloride in the
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    2. asked by Mo
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96. A solution was prepared by dissolving 1210 mg of K3Fe(CN)6 (329.2 g/mol) in sufficient water to give 577 mL. Calculate the molar
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    2. asked by Mo
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97. Calculate the volume(in dm3) of NaHCO3 required if 0,3 moles is required to make a solution of concentration 0,5 mol.dm-3.
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98. Calculate the volume (in cm3) required to make a solution of concentration 0,6 mol.dm-3 if 0,2 moles of solute is present.
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99. In reaction of2KClO3(s) = 2KCl(s) +3O2(g) The oxygen produced was collected by the displacement of water at 22 degrees Celsius
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100. Regarding the reaction below4KO2 (s) + 2CO2 (g) = 2K2CO3(s) + 3O2(g) Calculate the mass of KO2 needed to react with 50L of CO2
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