Propane is a commonly used fuel. How many moles of propane are in a tank that has a volume of 27.0 L at 22C and 26.0 atm

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?