Which of the following has an enthalpy of a formation value (DHf) of zero? a. N2O (g)
c. HNO3 (aq)
b. Cu (s)
d. CO2 (s

Which of the following is not a true statement about dwarf planets? a the kuiper belt contains comets, asteroids, and dwarf planets. b ceres is a dwarf planet located in the kuiper belt. c the largest known dwarf planet in the solar system is named eris.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-