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Newest Chemical Reactions Questions

1. Rusting iron in water is physical or chemical change
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   2. 197 views
2. Acid-base reactions, such as this one, can also be classified as which type of reaction?NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
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   2. 201 views
3. Zn + CuSO4 → ZnSO4 + Cu\Zinc (Zn) reacts with copper sulfate (CuSO4) to form zinc sulfate (ZnSO4) and copper (Cu). A classmate
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4. Lead (II) nitrate as Pb(NO3)2 and potassium iodide as KI combine to form the products shown. 2 KNO3 + PbI2 How many moles of
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   2. asked by 1135500
   3. 201 views
5. FeCI3 + 3H2O → Fe(OH)3 + 3HCIElement : Fe, CI, H, O Mass of an Atom (amu) : 56, 35, 1, 16 Iron chloride and water react
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6. Will the following replacement reaction occur?MgI2+Cl2 → ? (1 point) Responses No, it will not because iodine and chlorine
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   2. asked by pickles
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7. Which substances will make a salt when combined?Group of answer choices Fertilizer and detergent Vinegar and antacids Soap and
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   2. asked by meoww :3
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8. 1. __ZnS + __HCl → __ZnCl2 + __H2S2. __HCl + __Cr → __CrCl2 + __H2 3. __Al + __Fe3O4 → __Al2O3 + __Fe 4. __H2 + __Br2 →
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9. Use the following picture to help you answer the question: What type of reaction is the examples provided below?Synthesis
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10. Zn + HNOg -> Zn(NO3)2 +H2Using the formula in the previous question, what coefficient needs to be changed? 2HNO₃ 3HNO₃ ,
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11. Use the equation to answer the question.CH4 + _____Cl2 → CCl4 + _____HCl Which numbers balance this equation? (1 point)
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12. Question 13In the balanced chemical equation, below, determine what the coefficient and the subscript represent in 6H2O. Choose
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13. A reaction that involves the transfer of electrons from one molecule to another is referred to asan oxidation reaction. a
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14. ⦁ When you increase the _________ of a reaction, the particles gain _________ energy. They move faster and collide with each
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15. when dry chlorine gas is passed over molten White Phosphorus a mixture of two chloride Phosphorus trichloride and phosphorus
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16. Rxn of Al with Cl , and give the example has lawis dot structure
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    2. asked by Rizwan kakar
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17. Why Cl don’t react with O2
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    2. asked by Rizwan kakar
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18. Rxn between Na and Cl
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    2. asked by Rizwan kakar
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19. Use the reaction to answer the question.Cr O (aq) + H O(l) ⇄ 2CrO (aq)+ 2H (aq) Given Cr O ions are orange and CrO ions are
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20. Use the reaction to answer the question.3MnO (aq) + 4H (aq) ⇄ 2MnO (aq) + 2H O(l) + MnO (s) In this reaction, MnO ions are
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21. Balance the equation that represents a reaction between sulfuric acid and hydroiodic acid. Sulfuric acid and hydroiodic acid
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    2. asked by n
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22. Which statement correctly compares synthesis and decomposition reactions?(1 point)Responses Synthesis and decomposition
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    2. asked by nuh uhhhhhhhh
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23. Acid-base reactions, such as this one, can also be classified as which type of reaction?NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
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    2. asked by nuh uhhhhhhhh
    3. 79 views
24. Describe the kind of reaction occurring:Ba(cio3)2>bacl2+3O2
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25. Use the information in the table to answer the question.Bond Bond Energy (kJ/mol ) H–Cl 427 Cl–Cl 242 H–H 435 Hydrogen and
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    2. asked by nuh uhhhhhhhh
    3. 69 views
26. Use the information in the table to answer the question.Bond Bond Energy ( kJ/mol ) H-I 297 H-H 435 I-I 151 Hydrogen and iodine
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    2. asked by nuh uhhhhhhhh
    3. 109 views
27. Hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown.2HBr → H2 + Br2 The energy of the
    1. 1 answer
    2. asked by nuh uhhhhhhhh
    3. 63 views
28. Use the reaction to answer the question.NaHCO3 + KCl → NaCl + KHCO3 Which charge does the HCO3 ion have? (1 point) Responses
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    2. asked by pickles
    3. 74 views
29. Bond energy of reactants is ______ than the bond energy released when new products are formed.
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30. Hydrochloric acid and sodium hydroxide react to produce water and sodium chloride in an endothermic reaction.Which statement
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    2. asked by follow my ig bigmeltoogrimy13
    3. 112 views
31. How does the oxidation number of Carbon change in this reaction C(s) + O2(g) → CO2(g) ?
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    2. asked by r
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32. Redox reactions involve a series of(1 point)Responses Losses/ gains of neutrons Losses/ gains of neutrons Atoms of oxygen
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33. Which type of reaction is NaCl + AgNO3 → NaNO3 + AgCl?synthesis decomposition oxidation replacement
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34. Use the unbalanced chemical equation to answer the question.2NaHCO3 → Na2CO3 + CO2 Which of the following can be added to the
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    2. asked by In 2010, approximately 4.6×107 tons of paper we
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35. Use the table to answer the question.Reaction CH4 + 4Cl2 → CCl4 + 4HCl Reactants Products Bonds Present 4 H–C 4 Cl–Cl 4
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36. The reaction between ethanoic acid (CH₃COOH) and sodium carbonate (Na₂CO₃) is given by the equation: 2CH₃COOH +
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    2. asked by 1131207
    3. 235 views
37. Consider the reaction of hydrogen (H₂) with chlorine (Cl₂) to form hydrogen chloride (HCl). The bond energies are as
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    2. asked by 1131207
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38. In a replacement reaction, which nonmetal would replace chlorineA. iodine B. astatine C. fluorine D. bromine
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39. When potassium salt (KCl) forms, which action occurs between the reacting elements?(1 point)Responses Chlorine donates an
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40. using CER,identify the following reaction. Please type your answer and include 2 pieces of eviednece Na2S + HCI -> NaCI + H2S
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    2. asked by r
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41. Based on the reaction, identify the products.BeF2 + Mg → MgF2 + What type of reaction does this represent? synthesis
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42. Magnesium hydroxide reacts with nitric acid to produce magnesium nitrate and water.Mg(OH)2 + 2HNO3→ Mg(NO3)2 + 2H2O In one to
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43. Zn+2HCl→ZnCl2+H2𝑍 𝑛 + 2 𝐻 𝐶 𝑙 → 𝑍 𝑛 𝐶 𝑙 2 + 𝐻 2 Which type of reaction is this? (1 point)
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44. Question 1A)Which option describes something that causes ionic bonds to form?(1 point) Responses combustion reactions combustion
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45. Which statement explains why the electrolysis of hydrochloric acid (HCl) is an endothermic reaction?(1 point) It results in two
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46. How much total bond energy, in kj/mol , is in the products of the reaction?(1 point) kJ/mol 677 854 427 435
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47. Use the reaction to answer the question.2KCl → 2K + Cl2 Which type of reaction is shown? (1 point) Responses decomposition
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48. Sodium hydroxide (NaOH) and hydrochloric acid (HCI) combine to make table salt (NaCl) and water (H₂O). Which equation is
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    2. asked by Amber
    3. 139 views
49. Sodium hydroxide (NaOH) and hydrochloric acid (HCl) combine to make table salt (NaCl) and water (H2O). Which equation is
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50. Calculate the number of moler of cacl2 that can be abatined from 25g of limestone (caco3) in the gresence of excess acid (Hcl )
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    2. asked by Ibrahim
    3. 67 views
51. Use the unbalanced chemical equation to answer the question. 2NaHCO3 --Na2CO3+CO2 which if the following can be addedto the
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    2. 56 views
52. Sodium hydroxide (NaOH) and hydrochloric acid (HCl) combine to make table salt (NaCl) and water (H2O). Which equation is
    1. 1 answer
    2. asked by r
    3. 101 views
53. Acid-base reactions, such as this one, can also be classified as which type of reaction?NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
    1. 1 answer
    2. asked by hudson
    3. 95 views
54. Balance the following equation:Cu+HgNO3 = Cu(NO3)2+Hg Select the coefficient that would go in front of HgNO3.
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55. Chemical equations must be balanced because a mass can neither be created nor destroyed. b the mass of the reactants is always
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56. Combustion reactions release _____.(1 point)Responses light and ions light and ions energy and water energy and water water and
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57. Redox reactions can be explained in terms of electron transfer and oxidation number. The unbalanced equations A,B and C below
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58. FeCl3 + 3H2O → Fe(OH)3 + 3HCl Element Mass of an Atom (amu) Fe 56 Cl 35 H 1 O 16 Iron chloride and water react according to
    1. 1 answer
    2. asked by MR.BOTGPT
    3. 58 views
59. _H2SO4+_NaNO2 = _HNO2+_Na2SO4Find the coefficients to make both sides equal
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60. _Na+_H2O = _NaOH+_H2Find the coefficients to make both sides equal
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61. Use the chemical equation to complete the activity.2Cu+S→Cu2S Copper (Cu) reacts with sulfur (S) to form copper sulfide as
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62. Consider this reaction:CaCo3(s) CaO(s) + CO2(g). What could be done to increase the rate of decomposition of CaCO3? A. add CO2
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63. Magnesium hydroxide reacts with nitric acid to produce magnesium nitrate and water. Mg(OH)2+2HNO3→Mg(NO3)2+2H2O In one to two
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    2. asked by Keke
    3. 65 views
64. When iron reacts with oxygen, it forms iron oxide, or rust.iron + oxygen iron oxide If 112 g of iron combines with 24 g of
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65. Which of the following involves a transfer of electrons?PCl3 + Cl2 → PCl5 CO2 + 2LiOH → Li2CO3 + H2O FeCl2 + 2NaOH →
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66. A single replacement reaction is almost always a redox reaction.True False
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67. Hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown. 2HBr → H2 + Br2 The energy of the
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68. acid-base reactions can also be classified as which type of reaction?
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69. sodium reacts with chlorine to form the compound sodium
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70. Hydrogen bromide breaks down into diatomic hydrogen and bromine in the reaction shown.2HBr → H + Br The energy of the reactant
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71. Which is the next logical step in balancing the given equation?CS2(l) + Cl2(g) CCl4(l) + S2Cl2(l) A. Place the coefficient 2 in
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72. Is this equation completely balanced?2C8H8 + 25O2 8CO2 + 18H2O A. No, because the number of carbon, hydrogen & oxygen atoms on
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73. Use the information in the table to answer the question. Bond Bond Energy ( kJ/mol ) H-I 297 H-H 435 I-I 151 Hydrogen and iodine
    1. 3 answers
    2. asked by STAN: TWS, ZEROBASEONE, AND RIIZE 4 BETTER LIFE
    3. 69 views
74. Use the unbalanced chemical equation to answer the question.2NaHCO3 −> Na2CO3 + CO2 Which of the following can be added to the
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    2. 57 views
75. Use the table to answer the question.Reaction CH4 + 4Cl2 → CCl4 + 4HCl Reactants Products Bonds Present 4 H–C 4 Cl–Cl 4
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    2. 50 views
76. Acid-base reactions, such as this one, can also be classified as which type of reaction?NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
    1. 1 answer
    2. 88 views
77. Which of the following is a single replacement reaction?Ca(OH)2 + H2SO4 → CaSO4 + 2H2O CH4 + 2O2 → CO2 + 2H2O H2O+ CO2 →
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    2. 75 views
78. Which of the following equations has the correct products and is balanced correctly for a reaction between Na3PO4 and KOH?Na3PO4
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79. Zinc metal reacts with hydrochloric acid (HCl) to produce hydrogen gas.What best describes this reaction? A single replacement
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80. Explain the meaning of oxidation number
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81. FeCl + 3H20 → Fe(OH)3 + 3НС|Element Mass of an Atom (amu) Fe 56 35 H 1 16 Iron chloride and water react according to the
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82. w many sulfur atoms do you need for this reaction to produce 1 molecule of CS2 and 2 molecules of H2S?a 1 b 2 c 3 d 4
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83. sodium reacts with chlorine to form the compound sodium chloride...
    1. 1 answer
    2. asked by kasia
    3. 67 views
84. Use the table to answer the question.Reaction CH4 + 4Cl2 → CCl4 + 4HCl Reactants Products Bonds Present 4 H–C 4 Cl–Cl 4
    1. 1 answer
    2. 43 views
85. Use the table to answer the question.Reaction CH4 + 4Cl2 → CCl4 + 4HCl Reactants Products Bonds Present 4 H–C 4 Cl–Cl 4
    1. 1 answer
    2. 44 views
86. Use the table to answer the question.Reaction CH4 + 4Cl2 → CCl4 + 4HCl Reactants Products Bonds Present 4 H–C 4 Cl–Cl 4
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    2. 60 views
87. Mg(OH)2+2HNO3→Mg(NO3)2+2H2O balanced or unbalanced
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88. Mg(OH)2+2HNO3→Mg(NO3)2+2H2O
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    2. 47 views
89. Use the equation and the table to answer the question.FeCl3 + 3H2O → Fe(OH)3 + 3HCl Element Mass of an Atom (amu) Fe 56 Cl 35
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    2. 47 views
90. Use the table to answer the question.Reaction CH4 + 4Cl2 → CCl4 + 4HCl Reactants Products Bonds Present 4 H–C 4 Cl–Cl 4
    1. 1 answer
    2. 54 views
91. Which statement correctly compares synthesis and decomposition reactions?(1 point)Responses Synthesis and decomposition
    1. 1 answer
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92. Column A1. 2 H2O → 2 H2 + O2 : 2 H2O → 2 H2 + O2 2. 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O : 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O 3. 2
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93. Hydrochloric acid and Sodium thiosulfate produce a precipitate. how does INCREASING the concentration of reactants affect the
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94. It takes 1 molecule of nitrogen and 3 molecules of hydrogen to produce 2 molecules of ammonia using the following formula: 1N2+
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    2. 60 views
95. Use the chemical reaction to answer the question.NaHCO3+HC2H3O2→NaC2H3O2+H2O+CO2 A student mixes baking soda ( NaHCO3 ) and
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    2. 61 views
96. Use the information in the table to answer the question.Bond Bond Energy (kJ/mol) H–Cl 427 Cl–Cl 242 H–H 435 Hydrogen and
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    2. 54 views
97. Use the information in the table to answer the question.Bond Bond Energy ( kJ/mol ) H-I 297 H-H 435 I-I 151 Hydrogen and iodine
    1. 1 answer
    2. 76 views
98. Use the table to answer the question.Reaction Bonds Present Energy of Bonds Broken and Formed (kJ/mol) C + O2→CO2 O=O 2 C=O
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    2. 46 views
99. Use the information in the table to answer the question.Bond Bond Energy ( kJ/mol ) H–Cl 427 Cl–Cl 242 H–H 435 Hydrogen
    1. 1 answer
    2. 50 views
100. Use the table to answer the question.Reaction Bonds Present Energy of Bonds Broken and Formed (kJ/mol) C + O2→CO2 O=O 2 C=O
     1. 1 answer
     2. 72 views