IUL 3

How many moles of CrO3 are produced from the decomposition of 50.0 g of (NH4)2Cr2O7 (MM= 252.1 g/mole)?

1 (NH4)2Cr207 ---> 2 CrO3 + 2 NH3 + 1 H20

OO

When the volume and number of particles of a gas are constant which of the following is also constant

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?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?