Answer within 5-10 minutes
sara's mom takes the parkway to work. it takes her 30 minutes to travel from mile marker 88 where she enters to her exit at mile marker 121. what is her average speed?
4.0 mph
16.5 mph
33 mph
66 mph

9. write the chemical equation for the following word equations. include symbols for physical states in the equation. a. solid zinc sulfide + oxygen gas -> solid zinc oxide + sulfur dioxide gas b. aqueous hydrochloric acid + aqueous barium hydroxide -> aqueous barium chloride + water

What’s the percent by mass of carbon in c10h14n2

The biosphere of the earth is made up of what compound? organic or inorganic?