Draw the structures of the starting materials needed to make 2-methylhept-3-yne in the spaces provided. the starting materials may be any bromoalkane having five carbons or fewer.

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

How do you convert 4 mmol of bromobenzene to ml?

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments