3 years ago

Can someone pls help

Chemistry

1 answer:

zhannawk [14.2K]3 years ago

4 0

Answer:

1.2km=1,200,000! hope this helps

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"A molecular, or covalent bond, is formed when atoms bond by sharing pairs of electrons. This sharing can occur from atom to atom, or from an atom to another molecular bond."

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For KNO3 the heat of solution is 23.8 kJ/mol and the lattice energy is -685.0 kJ/mol. Calculate the heat of hydration.

alisha [4.7K]

<u>Answer:</u> The heat of hydration for potassium nitrate is 708.8 kJ/mol

<u>Explanation:</u>

We are given:

Heat of solution for potassium nitrate = 23.8 kJ/mol

Lattice energy for potassium nitrate = -685.0 kJ/mol

Heat of hydration for potassium nitrate = ?

To calculate the heat of hydration, we use the equation:

Heat of the solution = Heat of hydration + Lattice energy

Putting values in above equation, we get:

$23.8=\text{Heat of hydration}+(-685.0)\\\\\text{Heat of hydration}=23.8-(-685.0)\\\\\text{Heat of hydration}=708.8kJ/mol$

Hence, the heat of hydration for potassium nitrate is 708.8 kJ/mol

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How many total chlorine atoms are in the formula 4NaCl

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4 Chlorine atons

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