What did scientists learn when they mapped the ocean floor in the 1800s? A. There is a mountain range in the Atlantic.
B. The ocean floor is completely flat.
O
C. The plates in the ocean are colliding.
a
D. There are no features on the ocean floor.

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

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?