100.0 mL of a 0.780 M solution of KBr is diluted to 500.0 mL. What is the new concentration of the solution?

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains