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The equation for the reaction between ammonia and oxygen is shown. 4NH3(g) + 5O2(g) ⇌ 4NO(g) + 6H2O(g) . Calculate the entropy change of the reaction, using data from the table below.

GAS So / J K -1 mol -1 NH3(g) 193 O2(g) 205 NO(g) 211 H2O(g) 189 To calculate the entropy change, use Delta S = sum of products - sum of reactants, in their corresponding stoichometry. Remember to check the ...
Answered by • Chemistry tutor
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How do I solve simultaneous equations when one is quadratic? For example 3x^2 -2y = 19, 6x-y-14=0

The aim of this question is to find the two solutions which satisfy the quadratic equation. The approach to this can be broken down into a few principle steps: 1) Express y in terms of x. Here 6x-y-14=0 can ...
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Answered by Angus M. • Maths tutor
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Draw and explain the atomic structure of one atom of Chlorine.

The answer would include a dot-and-cross diagram, displaying at the centre, a nucleus/the chemical symbol for chlorine, followed by three electron shells, the first containing two electrons, the second eight...
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Answered by Maya C. • Chemistry tutor
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Why would a piece in from the Baroque period not have any tempo or dynamic markings on the score?

This is a convention of the Baroque period, as the musical form would generally dictate the tempo. Tempo and dynamic markings became more common throughout the Classical period.
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Answered by Maya C. • Music tutor
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How do cells become specialized?

All cells in our body contain the same genetic information stored in the DNA chromosomes located in the nucleus. So how do cells become skin cells, liver cells etc.? Cells undergo a process called differenti...
Answered by • Biology tutor
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