Opposite charges attract one another. True or false

The energy required to dissociate KF into neutral atoms is 498 kJ/mol. Given that the first ionization energy for K is 418 kJ/mol, calculate the electron affinity (in kJ/mol) for F. Show your work for all calculations.

Arrange the planets from strongest magnetic field to weakest magnetic field. Jupiter Earth Venus

Two planets have the same surface gravity, but planet b has twice the mass of planet a. if planet a has radius r, what is the radius of planet b?

The diagram below shows a star map. At which of these locations would the moon be most likely found? Location A Location B Location C Location D

1.) if you are sitting still are you accelerating? How do you know? 2.) you're on a skateboard, moving very fast but at a constant speed. are you accelerating? 3.) Lara claims that if an object is accelerating it must be moving.

The pressure, p, of water (in pounds per square foot) at a depth of d feet below the surface is given by the formula p=15+15/33d. If a diver is 100 feet below surface, what is the pressure of the water on the diver? a. 15.0 pounds per square feet b.

Ndy has two samples of liquids. Sample A has a pH of 4, and sample B has a pH of 6. What can Andy conclude about these two samples? Sample A is, and sample B is. NextReset

Which newtons law is when dominos are knocking eachother down?

The divisions of time in the Geologic Time Scale represent: a) the Law of Superposition b) the results of radiometric dating c) major changes in biodiversity d) multiples of 35 million years e) all of the above

You are in a canyon and yell across. It takes 4 seconds for the echo to come back to you. How wide is the canyon?