Write net ionic equations for the reaction that occurs when aqueous solutions of ammonium sulfate (NH4)2SO,, and barium nitrate, Ba(NO3)2 react to form a white precipitate.
a Write the balanced chemical equation:
b. Write the overall ionic equation:
C. Identify the spectator ions:
d Write the net ionic equation:

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

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

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