The figure above shows Elena’s demand curve for soda. The price of a soda is​ $1.00. Elena’s consumer surplus from her 5th soda is ___. 

Suppose that the State of Florida legalizes the recreational use of marijuana and imposes a tax on its consumption. If the tax revenue collected by the government decreases when the price of marijuana falls, this is a(n) ____ tax.

Japan can produce 1 iPhone by giving up the production of 6 printers. The United States can produce 1 iPhone by giving up the production of 3 printers. For which good does Japan have an absolute advantage?

To calculate the opportunity cost per unit of a good, you can divide the decrease in the quantity of the good that is forgone by the ____.

Movie  は なんですか。

Date　(Romantic)  は なんですか。

Magazine  は なんですか。

Today  は なんですか。

Which of the following is/are correct resonance structure(s) for the following cation? Choose all that apply. Adding in lone pairs and hydrogens can be helpful. 

Which of the following is/are correct resonance structure(s) for compound A? Choose all that apply. (It may help to add lone pairs and hydrogens)