The lattice energy of a salt is related to the energy required to separate the ions. for which of the following pairs of ions is the energy that is required to separate the ions largest? (assume that the distance between the ions in each pair is equal to the sum of the ionic radii.)

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot