17 Divide:

Oxygen has an atomic number of 8. When it is uncharged, an oxygen atom will have __________ electrons in its outermost (valence) electron shell.

What is Gregor Mendel best known for?

Bacteria and viruses both belong to the domain bacteria. 

Bacteria and viruses both belong to the domain bacteria. 

Each chemical element has a unique atomic number, which indicates the number of ________ in its atoms.

Each chemical element has a unique atomic number, which indicates the number of ________ in its atoms.

Calculate the expression: x = 2+3. What is the value of x?

What can be concluded from this table? 

Scenario:A factory produces widgets, but during production, it emits pollution that affects the nearby community. The cost of producing one widget is $50. Each widget creates pollution that imposes an external cost of $20 per widget on the community.  Question: What is the socially optimal price of a widget that accounts for the externality?