What is the heat of reaction H2 + 1/3N2 2/3NH3

Which is true of transition metals when moving from left to right on the periodic table? the d sublevels are not filled across the period. the cation radii become larger across the period. atomic radii increase slightly and then start to decrease. atomic radii decrease slightly and then start to increase. o

What is the formula that this ionic compounds could form sr2+p3-o2-

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure