Which sequence of coefficients will balance the following equation? Mg (s) + O2 (g) --> 2MgO (s) A. 4,1,2
B. 1,1,2
C. 2,1,2
D. 3,1,2

Which metal exist in liquid state and can be cut with knife ?

Name the element in group 17, period 2. (periodic table)

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?