A force of 84 N is applied to an object that accelerates at a rate of 12 m/s^2. What is the mass of the object? Need help ASAP

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?

Determine the length of the object shown. 97.8 mm 97.80 mm 97 mm 98 mm

Technician a says that you should never jump-start a frozen battery. technician b says that a frozen battery can explode, causing injury, when jump-started. who is correct?