Which of the chemical reactions whose equations are below produce a precipitate? 2KCIO3 - 2KCI +302
O CHA + 202 - CO2 + 2H20
Mg + 2HCI - MgCl2 + H2
O Pb(NO3)2 + 2Naci - PbCl2 + 2NaNO3

Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

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