Abuffer is made by dissolving 11.6 g of sodium dihydrogen phosphate, nah2po4 (mr = 119.97701128 g/mol), and 20.1 g of disodium hydrogen phosphate, na2hpo4 (mr = 141.95884056 g/mol), in a liter of solution. what is the ph of the buffer? (assume ka for this equilibrium is 6.2 ✕ 10−8, and that kw is 1.0 ✕ 10−14.)

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course. a. 12.5m/s b. 1.33m/s c. 13.3m/s d. 1.25m/s

Which food could be transported in a galvanized metal container?