NH3(g) --> NH3(1)
endothermic or exothermic?

Which description best characterizes the motion of particles in a solid?

What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume

Which of these is an intensive property of a substance