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DaniilM [7]
3 years ago
11

The molar volumes of solid and liquid lead at the normal melting temperature of lead are, respectively, 18.92 and 19.47 cm3. cal

culate the pressure
Chemistry
2 answers:
Alexxandr [17]3 years ago
5 0

Answer:

ΔP = (ΔH / ΔV) ln(T2 / T1)

Explanation:

alexdok [17]3 years ago
4 0

We use the formula:

ΔP = (ΔH / ΔV) ln(T2 / T1)

where,

ΔH = change in enthalpy from solid to liquid = 4810 J/mol

ΔV = change in volume from solid to liquid = 0.55 cm^3/mol

T2 = 620 K, T1 = 600 K

 

So,

ΔP = (4810 / 0.55) ln(620 / 600)

ΔP = 286.76 J/cm^3

or converting to atm:

<span>ΔP = 2830 atm</span>

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The required mole ratio of  NH₃ to N₂ in the given chemical reaction is 2:4.

<h3>What is the stoichiometry?</h3>

Stoichiometry of the reaction gives idea about the number of entities present on the reaction before and after the reaction.

Given chemical reaction is:

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2 years ago
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Explanation:

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For the reaction o(g) + o2(g) → o3(g) δh o = −107.2 kj/mol given that the bond enthalpy in o2(g) is 498.7 kj/mol, calculate the
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The reaction;
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