The rate constant for a certain reaction is measured at two different temperatures: temperature k
376.0 °C 4.8 x 10^8
280.0 °C 2.3 x 10^8

Assuming the rate constant obeys the Arrhenius equation, calculate the activation energy Ea for this reaction.

The activation energy Ea for this reaction is 22689.8 J/mol

Explanation:

According to Arrhenius equation with change in temperature, the formula is as follows.

= rate constant at temperature =

= rate constant at temperature =

= activation energy = ?

R= gas constant = 8.314 J/kmol

= temperature =

= temperature =

Putting in the values ::

The activation energy Ea for this reaction is 22689.8 J/mol

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.