PLEASE HELP 10 POINTS IM BEING TIMED Kayla knows that compounds can be either ionic or covalent. She thinks this unknown compound must be ionic. Is she correct, and why or why not?
A
Yes, because the unknown compound has a high melting point caused by a weak ionic bond.
B
Yes, because the unknown compound has a high melting point caused by a strong ionic bond.
C
No, because the unknown compound has a high melting point caused by a weak covalent bond.
D
No, because the unknown compound has a high melting point caused by a strong covalent bond.

Afigure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 20.9 12000 200 3.33

You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?

Metals are good conductors of electricity because they