The shape of a planet's orbit is influenced by gravity. true false

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

What is the molar mass of potassium nitrate, kno3

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?