Halogens on two adjacent carbons in a benzene ring are in the:
para-position
meta-position
ortho-position
none of the above

The clouds are grey and ground is wet. a quantitative b qualitative

How many moles of oxygen react with 12 moles of aluminum

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?