Polarity of the molecules increase with electro nogativity

Which of the following elements is a representative element? a. chromium (cr) b. aluminum (al) c. mercury (hg) d. silver (ag)

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device