4.0 g of sodium hydroxide NaOH was dissolved in sufficient water to make up 125 mL of solution. A) Find the concentration of the solution.

B) What mass of sodium hydroxide could be obtained by heating a 20 mL sample of this solution to dryness?

C) If 30 mL of the solution were mixed with sufficient water to produce 480 mL of a more dilute solution, what would be the concentration of the dilute solution?

D) If 200 mL of the more dilute solution were then mixed with 100 mL of the more concentrated solution, what would be the concentration of the mixed solution?

Adilute aqueous potassium nitrate solution is

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.

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.