Write equations to represent positive and negative ion formation for the following pairs of elements. Then write a formula
for the ionic compound that results when the ions combine.
a. Ca and S
b. Mg and N
c. elements number 19 and 17

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?