The activation energy for the gas phase decomposition of 2-bromopropane is 212 kj. ch3chbrch3ch3ch=ch2 + hbr the rate constant at 683 k is 6.06×10-4 /s. the rate constant will be 5.06×10-3 /s at

The question is essentially asking for the temperature at which the rate constant will be equal to 5.06 x 10⁻³. We will be using the Arrhenius equation to solve this problem. Which is shown below:

k = Ae^(-Ea/RT)

We first must use the values provided to solve for the value of A. Once we know A, we can solve for the temperature at a given rate constant.

A = k/(e^(-Ea/RT))

A = (6.06 x 10⁻⁴)/(e^(212000/(8.314 x 683)))

A = 9.92 x 10⁻¹²

Now that we have a value for A, we can solve for the temperature that gives the provided rate constant. First we can rearrange the equation to solve for T:

k = Ae^(-Ea/RT)
lnk = lnA - Ea/RT
lnk - lnA = -Ea/RT
T = -Ea/(R(lnk - lnA))

T = -212/(0.008314)(ln(5.06 x 10⁻³) - ln(9.92 x 10⁻¹²))

T = 724 K

The rate will be equal to 5.06 x 10⁻³ at a temperature of 724 K.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later