When a certain free element (which is solid at room temperature) is heated, it forms vapor molecules containing 2 atoms each. The gas effuses at a rate of 37.1 mL per minute. If xenon gas effuses at a rate of 25.9 mL per minute, find the identity (name) of the element. You must show all calculations

An atom of argon has a radius Ar = 71. pm and an average speed in the gas phase at 25°C of 249.m/s. Suppose the speed of an argon atom at 25°C has been measured to within 1.0%. Calculate the smallest possible length of box inside of which the atom could be known to be located with certainty. Write your answer as a multiple of Ar and round it to 2 significant figures. For example, if the smallest box the atom could be in turns out to be 42.0 times the radius of an atom of argon, you would enter "42. Ar" as your answer. Ar X ?

60 If 5.50 L of water vapor at 50.2 °C and 0.121 atm reacts with excess iron, how many grams of iron(III) oxide will be produced? 2 Fe(s) + 3 H,O(g) → Fe,0,(s) + 3 H, (g) mass:

Solve the mass of the Van der Waals equation.