monique's teacher asked her to add pure acid to 8 gallons of a 32% acid solution to make a solution that is 70% acid. how much pure acid should monique add?

Earth's atmosphere is unique among the planets and is able to support life because it contains a large amount of a) oxygen b) helium c) methane d) carbon dioxide

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.

Aschool cafeteria has 40 tables. 35% of the tables have 8 chairs at each table. the remaining 65% of the tables have 6 chairs at each table. complete the model. then complete the statements to find the total number of chairs in the cafeteria.