Which of the following elements has the lowest ionization energy? Question options:

A)

Hydrogen

B)

Beryllium

C)

Argon

D)

Helium

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver

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.