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Novay_Z [31]
3 years ago
9

A __________ has distinct properties and composition that never vary

Chemistry
1 answer:
Nutka1998 [239]3 years ago
4 0

Answer:

Pure Substance

Explanation:

i just answered this question in class

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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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Cellular differentiation<span> is the normal process by which a </span>cell<span> becomes increasingly specialized in form and function. The classic </span>example<span> is the process by which a zygote develops from a single </span>cell<span> into a multicellular embryo that further develops into a more complex fetus.

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