Which of the following is unique for any given element? a. the number of neutrons b. the charge on the electrons c. the number of protons d. the mass of a neutron

Consider the following system at equilibrium. caco3(s) ca2+(aq) + co32–(aq) the addition of which compound will cause a shift in equilibrium because of a common ion effect? ccl4 co2 cuso4 na2co3

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Which samples do the atoms have the least kinetic energy