How many fluorine atoms bond with calcium to form calcium fluoride?

Which type of stress results when two plates push against one another? a. compression b. tension c. force d. shear

Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?