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11111nata11111 [884]
2 years ago
14

40 POINTS!! If all of the water is removed from a one-mole sample of Ba(OH)2·8H2O, by how many grams will the mass of the sample

be reduced?
Chemistry
1 answer:
yarga [219]2 years ago
5 0

Answer:

8H2O x 100.

Explanation:

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From the statement of Hess' law, the enthalpy of the reaction A---> C is +90 kJ

<h3>What is Hess' law?</h3>

Hess' law of constant heat summation states that for a multistep reaction, the standard enthalpy of reaction is always constant and is independent of the pathway or intermediate routes taken.

From Hess' law, the enthalpy change for the reaction A ----> C is calculated as follows:

A---> C = A ---> B + B ---> C

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The above reaction A---> C can be shown in the enthalpy diagram below:

A -------------------> C (ΔH = +90 kJ)

\ /

\ / (ΔH = +60 kJ)

(ΔH = +30 J) \ /

> B

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