What is the Mr of a substance where 1 mole has a mass of 11 g?

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure