Lab: Physical and Chemical Changes
Assignment: Lab Report Active
HELP

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

What is the correct lewis structure for chloroform chcl3

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