The element y contains 2 naturally occurring isotopes. the relative abundance’s

What are transitions between a liquid and gas called? identify which way they are transitioning

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?

Describe the properties of sodium, chlorine, and sodium chloride