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leva [86]
3 years ago
7

3h2(g)+o3(g) 3h20(g) arrow after the o3(g)whats the overall enthalpy?

Chemistry
1 answer:
Dmitry_Shevchenko [17]3 years ago
8 0

The overall enthalpy of reaction will be calculated from enthalpy of formation of products and reactants.


DeltaHrxn = [Sum of enthalpy of formation of products] - [sum of enthalpy of formation of reactants]

DeltaHrxn = 3 X deltaHf (H2O) - [ 3 X DeltaH (H2) + DeltaH (O3)]

DeltaHrxn =  3 X (--242) - [ 0 + 143] = -869 kJ / mole


We can also calculate the enthalpy of reaction from bond energies


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5 0
2 years ago
Based on the visible light spectrum, which of the following has the longest wavelength?
bezimeni [28]

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7 0
3 years ago
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2.
katovenus [111]

Answer:

A. 6atm

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Using pressure law equation:

P1/T1 = P2/T2

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According to this question;

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4 0
3 years ago
14
Bond [772]

Answer:

Explanation:

The melting point of a substance is the temperature at which its melt. The state of a substance is dependent on it's melting temperature. Generally, melting point above 25 °C is a solid.

This means phenol is a solid

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