June 2018 NY Regents Chemistry Exam 15 In a laboratory investigation, a student separates colored compounds obtained from a mixture of...

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...

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)...

January 2018 NY Regents Chemistry Exam 50 Given the balanced equation representing a reaction: CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) +...

January 2018 NY Regents Chemistry Exam 49 The cooling curve below represents the uniform cooling of a substance, starting at a...

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...

January 2018 NY Regents Chemistry Exam 33 The table below gives the atomic mass and the abundance of the two naturally occurring isotopes...

January 2018 NY Regents Chemistry Exam 25 Which laboratory process is used to determine the concentration of one solution by using a...

January 2018 NY Regents Chemistry Exam 21 Which process involves the transfer of electrons? (1) double replacement (2) neutralization (3)...

January 2018 NY Regents Chemistry Exam 19 A catalyst increases the rate of a chemical reaction by (1) providing an alternate reaction...