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GaryK [48]
3 years ago
15

How is H fusion used to calculate the mass of solid that 1 kj of energy will melt?

Chemistry
1 answer:
ziro4ka [17]3 years ago
4 0

Answer : If in any reaction ΔH(fusion) is given we can consider its units;


ΔH(transition) has units (KJ/mol) and mass and molecular mass of that compound has unit mol/g and g respectively.


When we solved this, we get the units as KJ/mol which satifies the equation value for q.


So, q=n X ΔH (transition);


Hence, to find the mass of solid we can use the above equation.

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CO + 2H2 ⇌ CH3OH ΔH <0
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Answer:

C. The energy released as the bonds in the reactants are broken is greater than the energy absorbed as the bonds in the product are formed.

Explanation:

  • CO + 2H₂ ⇌ CH₃OH     ΔH <0

As ΔH is negative, the given reaction is exothermic.

That means that <em>the enthalpy of the product is less than the enthalpy of the reactants</em>. In other words, part of the energy from the reactants is used to form new bonds (between C and H, for example), while the other part is transfered outside the system as heat.

Thus the correct answer is C.

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Draw both the chair and boat conformation of 1,4-dimethylcyclohexane with the methyl groups as cis and trans for both conformati
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Answer:

Boat conformation cis 1,4-dimethyl cyclohexane has the highest energy.

Explanation:

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