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In a laboratory activity, a student measures the pH values of four household liquids and distilled water, as shown in the table below. During this laboratory activity, appropriate safety equipment is
NY Regents Chemistry Exam June 2023 Questions 82-85 In a laboratory activity, a student measures the pH values of four household liquids...
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In the United States, nearly all fuel for automobiles is a mixture of gasoline and ethanol, C2H5OH. The equation below represents a reaction between ethene and water to produce ethanol.
NY Regents Chemistry Exam June 2023 Questions 79-81 In the United States, nearly all fuel for automobiles is a mixture of gasoline and...
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As plants grow, light energy is converted into chemical energy during the process of photosynthesis. The reaction produces glucose and oxygen. The balanced equation below represents photosynthesis.
NY Regents Chemistry June 2023 Questions 74-78 As plants grow, light energy is converted into chemical energy during the process of...
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The Ostwald process is an industrial method to produce nitric acid, HNO3(aq), used in the manufacture of fertilizers. Several steps are involved in this process. In the first step, ammonia and oxygen
NY Regents Chemistry Exam June 2023 Questions 70-73 The Ostwald process is an industrial method to produce nitric acid, HNO3(aq), used in...
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Several elements are considered endangered because there is a risk of these elements becoming unavailable for commercial uses in the next 100 years. Helium, zinc, gallium, indium, and tellurium are in
NY Regents Chemistry Exam June 2023 Questions 66-69 Several elements are considered endangered because there is a risk of these elements...
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During a laboratory activity, 15.0 mL of hydrochloric acid, HCl(aq), is exactly neutralized by 18.2 mL of 0.11 M sodium hydroxide, NaOH(aq). During the laboratory activity, appropriate safety equipmen
NY Regents Chemistry Exam June 2023, Questions 64-65 During a laboratory activity, 15.0 mL of hydrochloric acid, HCl(aq), is exactly...
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When solid copper is placed in an aqueous silver nitrate solution, a reaction occurs, as represented by the equation below.
When solid copper is placed in an aqueous silver nitrate solution, a reaction occurs, as represented by the equation below. Cu(s) +...
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Nitrogen dioxide gas, NO2(g), can reach equilibrium with dinitrogen tetroxide gas, N2O4(g), in a closed system. At 1.0 atmosphere, the boiling point of N2O4 is 21°C. The equation below represents this
NY Regents Chemistry Exam June 2023: 58-60 Nitrogen dioxide gas, NO2(g), can reach equilibrium with dinitrogen tetroxide gas, N2O4(g), in...
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Consider the equilibrium N2O4(g) <---> 2NO2 (g) ΔH = 58.0kJ In which direction will the equilibrium shift when a. N2O4 is added
Consider the equilibrium N2O4(g) <---> 2NO2 (g) ΔH = 58.0kJ In which direction will the equilibrium shift when a. N2O4 is added b. NO2 is...
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Atomic Models: Dalton, J.J. Thomson, Rutherford, Bohr, Shrodinger, de Broglie, Chadwick.
Dalton's Theory: All matter is composed of indivisible atoms. An element is a type of matter composed of only one kind of atom. All atoms...
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