For the decomposition of hydrogen iodide on a gold surface at 150 °C 2 HI(g)H2(g) + I2(g) the average rate of disappearance of HI over the time period from t = 0 s to t = 3646 s is found to be 1.20×10-4 M s-1.\

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

The arrangement of particles is most ordered in a sample of

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin