HELP! True or false: When there are zero lone pairs on the central atom, the shape is
symmetrical (assuming all of the bonds are the same).

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

Steam reforming of methane ( ch4) produces "synthesis gas," a mixture of carbon monoxide gas and hydrogen gas, which is the starting point for many important industrial chemical syntheses. an industrial chemist studying this reaction fills a 1.5 l flask with 3.5 atm of methane gas and 1.3 atm of water vapor at 43.0°c. he then raises the temperature, and when the mixture has come to equilibrium measures the partial pressure of carbon monoxide gas to be 1 .0 atm. calculate the pressure equilibrium constant for the steam reforming of methane at the final temperature of the mixture. round your answer to 2 significant digits.

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils