What is the the heat of reaction, delta, in kJ/mol? a) -26kJ/mol
b) -25kJ/mol
c) -10kJ/mol
d)-35kJ/mol​

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

How are the terms group and period used on the 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?