Do you think the small pieces of rock in the picture formed at the same time as the rock containing those pieces? Why/why not? If you think that they formed at different times, which are older? Which are younger?

What’s the percent by mass of carbon in c10h14n2

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

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.