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In a laboratory investigation, a student separates colored compounds obtained from a mixture of cru
June 2018 NY Regents Chemistry Exam 15 In a laboratory investigation, a student separates colored compounds obtained from a mixture of...
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What is the vapor pressure of propanone at 50.°C?
June 2018 NY Regents Chemistry Exam 13 What is the vapor pressure of propanone at 50.°C? (1) 37 kPa (2) 50. kPa (3) 83 kPa (4) 101 kPa...
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Graphite and diamond are two forms of the same element in the solid phase that differ in their
June 2018 NY Regents Chemistry Exam 8 Graphite and diamond are two forms of the same element in the solid phase that differ in their (1)...
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Given the balanced equation representing a reaction:CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) + energy
January 2018 NY Regents Chemistry Exam 50 Given the balanced equation representing a reaction: CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) +...
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The cooling curve below represents the uniform cooling of a substance, starting at a temperature abo
January 2018 NY Regents Chemistry Exam 49 The cooling curve below represents the uniform cooling of a substance, starting at a...
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What is the net amount of heat released when two moles of C2H6(g) are formed from its elements at 10
January 2018 NY Regents Chemistry Exam 44 What is the net amount of heat released when two moles of C2H6(g) are formed from its elements...
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The table below gives the atomic mass and the abundance of the two naturally occurring isotopes of
January 2018 NY Regents Chemistry Exam 33 The table below gives the atomic mass and the abundance of the two naturally occurring isotopes...
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Which laboratory process is used to determine the concentration of one solution by using a volume of
January 2018 NY Regents Chemistry Exam 25 Which laboratory process is used to determine the concentration of one solution by using a...
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Which process involves the transfer of electrons?
January 2018 NY Regents Chemistry Exam 21 Which process involves the transfer of electrons? (1) double replacement (2) neutralization (3)...
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A catalyst increases the rate of a chemical reaction by
January 2018 NY Regents Chemistry Exam 19 A catalyst increases the rate of a chemical reaction by (1) providing an alternate reaction...
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