Which of the following atoms tend to gain two electrons to form a 2- anion? check all that apply. a. nitrogen (n) b. aluminum (al) c. selenium (se) d. oxygen (o)

Keep your choice of a major there is probably no single correct choice.

The “rule of 72” is used to approximate the time required for prices to double due to inflation. if the inflation rate is r%, then the rule of 72 estimates that prices will double in 72/r years. for instance, at an inflation rate of 6%, prices double in about 72/6 or 12 years. write a program to test the accuracy of this rule. for each interest rate from 1% to 20%, the program should display the rounded value of 72/r and the actual number of years required for prices to double at an r% inflation rate. (assume prices increase at the end of each year.)

All of the following are characteristics that must be contained in any knowledge representation scheme except