Which statement correctly describes why a compound is a pure substance?
o a compound is not a pure substance because each of its molecules is m
elements
a compound is a pure substance because its molecule cannot be broken
o a compound is not a pure substance because it is not an element, and on
o a compound is a pure substance because it consists of two different elen

1) how many electrons are in each energy level of the following elements? a. he b. na c. na d. ne 2) how many valence electrons are percent in the following atoms? a. s b. mg c. be d. cl 3) which of the following elements are stable as atoms? a. he b. o c. cl d. ar if you are able to provide the work as to how you got the answers that would be greatly appreciated. : )

What is the value of keq for the reaction expressed in scientific notation

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution