What can you conclude about the relative magnitudes of the lattice energy of lithium iodide and its heat of hydration?

Complete question:

When lithium iodide is dissolved in water, the solution becomes hotter.

What can you conclude about the relative magnitudes of the lattice energy of lithium iodide and its heat of hydration?

The heat of hydration is greater in magnitude than the lattice energy  and lattice energy is smaller in magnitude that the heat of hydration.

Explanation:

When the solution becomes hotter on addition of lithium iodide, it shows exothermic reaction and it means that the heat of hydration is greater than the lattice energy  and lattice energy is smaller in magnitude that the heat of hydration.

This can also be observed in the formula below;

cant without the picture! ?

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s