If the mass of a material is 78 grams and the volume of the material is 23 cm3, what would the density of the material be?

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

Which of the following is described by the equation h2o(s)+ heat=h2o(i) a freezing melting condensing evaporating