When a 2.00 g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 1.28 kJ ⋅ K − 1 , the temperature decreases by 0.360 K . Calculate the molar heat of solution of KCl .

Answer : The molar heat of solution of KCl is, 17.19 kJ/mol

Explanation :

First we have to calculate the heat of solution.

where,

q = heat produced = ?

c = specific heat capacity of water =

= change in temperature = 0.360 K

Now put all the given values in the above formula, we get:

Now we have to calculate the molar heat solution of KCl.

where,

= enthalpy change = ?

q = heat released = 460.8 J

m = mass of = 2.00 g

Molar mass of = 74.55 g/mol

Now put all the given values in the above formula, we get:

Therefore, the molar heat of solution of KCl is, 17.19 kJ/mol

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72