August 2019 NY Regents Chemistry Exam 24 When a sample of Mg(s) reacts completely with O2(g), the Mg(s) loses 5.0 moles of electrons. How...

August 2019 NY Regents Chemistry Exam 21 In terms of disorder and energy, systems in nature have a tendency to undergo changes toward (1)...

August 2019 NY Regents Chemistry Exam 20 For a chemical system at equilibrium, the concentrations of both the reactants and the products...

August 2019 NY Regents Chemistry Exam 17 Distillation is a process used to separate a mixture of liquids based on different (1) boiling...

August 2019 NY Regents Chemistry Exam 16 Which statement describes a mixture of sand and water at room temperature? (1) It is...

August 2019 NY Regents Chemistry Exam 15 At STP, a 50.-gram sample of H2O(l) and a 100.-gram sample of H2O(l) have (1) the same chemical...

August 2019 NY Regents Chemistry Exam 14 An atom of which element has the strongest attraction for electrons in a chemical bond? (1)...

August 2019 NY Regents Chemistry Exam 13 Given the equation representing a reaction: H + H → H2 What occurs during this reaction? (1) A...

August 2019 NY Regents Chemistry Exam 10 Which two terms represent types of chemical formulas? (1) mechanical and structural (2)...

August 2019 NY Regents Chemistry Exam 3 Which symbol represents a particle that has a mass approximately equal to the mass of a neutron?...