During lab you measured the ph of mixtures containing strong acid and strong base. Write net brønsted equations that show the acid-base reactions of common household items. For polyprotic species (such as vitamin c, lemon juice, and washing soda), please show only one proton transfer. Remember that spectator ions are not included. (use the lowest possible coefficients. Omit states-of-matter in your answer. ).

In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.

Which of the following does the reading test of the sat ask you to do ?

Rick is on a bicycle trip. every 4 days he bikes 230 km. if rick keeps this same pace for 16 days, how many kilometers will he bike?