What is the empirical formula of a compound containing 65.5 grams carbon, 5.5 grams hydrogen, and 29.0 grams oxygen? (5 points) Select one: a. C3H3O b. C4H4O c. C3H2O2 d. C2H3O2

Transportation is the largest single source of air pollution in the united states. air pollution can harm the environment and human health. which technology could offer a solution to this problem? mufflers that reduce noise motors that run on electricity tires that improve gas mileage

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

Classify this reaction: 2al+n2-> aln.