June 2017 NY Regents Chemistry Exam 8 What is conserved during all chemical reactions? (1) charge (2) density (3) vapor pressure (4)...

June 2017 NY Regents Chemistry Exam 7 Which type of formula shows an element symbol for each atom and a line for each bond between atoms?...

June 2018 NY Regents Chemistry Exam 44 Based on Table I, what is the ΔH value for the production of 1.00 mole of NO2(g) from its...

June 2018 NY Regents Chemistry Exam 41 An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree...

June 2018 NY Regents Chemistry Exam 32 Each line in the spectra represents the energy (1) absorbed as an atom loses an electron (2)...

June 2018 NY Regents Chemistry Exam 31 Which elements are present in this mixture? (1) D and A (2) D and Z (3) X and A (4) X and Z...

June 2018 NY Regents Chemistry Exam 20 Systems in nature tend to undergo changes toward (1) lower energy and lower entropy (2) lower...

June 2018 NY Regents Chemistry Exam 19 A chemical reaction occurs when reactant particles (1) are separated by great distances (2) have...

June 2018 NY Regents Chemistry Exam 18 A molecule of any organic compound has at least one (1) ionic bond (2) double bond (3) oxygen atom...

June 2018 NY Regents Chemistry Exam 17 At which temperature will Hg(l) and Hg(s) reach equilibrium in a closed system at 1.0 atmosphere?...