What force is needed to accelerate a car with a mass of 950 kg at a rate of 5.0 meters/sec2? 190 n 4,750 n 955 n

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

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?