Tooth enamel is ca5(po4)3(oh). calculate the percent composition of the elements present.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided