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IrinaVladis [17]
3 years ago
15

What is enthalpy?

Chemistry
1 answer:
aleksandrvk [35]3 years ago
7 0

Answer: the heat content of a system at constant pressure.

Explanation:

Enthalpy is defined as the heat content of a system at constant pressure.

It is the heat absorbed or released during a reaction at constant pressure,denoted as ΔH.

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What is the value for AG at 5000 K if AH = -220 kJ/mol and S= -0.05 kJ/(mol-K)?
Serhud [2]

Answer:

C. 30 kJ

Explanation:

Hello there!

In this case, in agreement to the thermodynamic definition of the Gibbs free energy, in terms of enthalpy of entropy:

\Delta G= \Delta H-T\Delta S

It is possible to calculate the required G by plugging in the given entropy and enthalpy as shown below:

\Delta G=-220kJ/mol-5000K*-0.05kJ/mol*K\\\\\Delta G=30kJ/mol

Therefore, the answer is C. 30 kJ .

Best regards!

4 0
2 years ago
Why is it important to make observations about the reactants? ​
Free_Kalibri [48]

Answer:

Reason Down below

Explanation:

It is important because when you make observation you get a clue sometimes and it  reactants i feel like it also takes places with observation. :)

7 0
3 years ago
2. What is the difference between an element and a compound?​
melamori03 [73]

Answer:

element.

.it is pure substance composed of only one type of atoms.

.the number of element is more than 118.

compound.

.a compound is composed of atoms of two or more elements.

.the number of compound is very large in comparison of elements.

hope it help

6 0
2 years ago
Why is the cloning of Dolly the sheep important to humans? Animals that produce human medicines could be cloned. Cloned animals
a_sh-v [17]

Answer:

C. better meat

Explanation:

Farmers always are looking to better their stock to possibly increase milk production or increase the meat quality.

5 0
3 years ago
Read 2 more answers
For which of the following reactions is ΔH∘rxn equal to ΔH∘f of the product(s)?
nexus9112 [7]
<span>The correct answers are A, B, and D. The ΔHrxn is equal to the ΔHf when the ΔHf of the reactants is zero, and this can only occur when the reactants are pure elements (not compounds) in their natural phase at ambient temperature.

c) Chlorine's natural phase is gaseous, but since it is a liquid in this reaction, ΔHf ≠ 0.

e) CO is a compound, not a pure element.

f) BaCO3 is a compound, not a pure element.</span>
6 0
3 years ago
Read 2 more answers
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