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mrs_skeptik [129]
2 years ago
13

What is the best definition

Chemistry
2 answers:
Ann [662]2 years ago
7 0

Answer:

B.

Explanation:

thermal expansion♡

Sav [38]2 years ago
5 0

answer:

I think is B. Thermal expansion is when an object's volume

decreases due to heat increase.

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What is the total pressure in a container with 256 mm Hg of Oz, 198 mm Hg of He,
irina1246 [14]

Answer:

P(total pressure) = 504 mmHg = 504mm/760mm/atm = 0.663 atm

Explanation:

Apply Dalton's Law of Partial Pressures.

P(total) = ∑Partial Pressures = ∑(256mm + 198mm + 48mm) = 504 mmHg

P(total pressure) = 504 mmHg = 504mm/760mm/atm = 0.663 atm

7 0
2 years ago
Que enuncia la ley de la conservación de la energia​
Flauer [41]

english:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time.

spanish:

En física y química, la ley de conservación de la energía establece que la energía total de un sistema aislado permanece constante; se dice que se conserva con el tiempo.

3 0
2 years ago
Write at least three characteristics of acids and three characteristics of bases. These characteristics should be what makes the
ki77a [65]
Characteristics of acid

-It tastes sour
-It reacts with metals and carbonates
-It turns blue litmus paper red

Characteristics of base

-It tastes bitter
-It feels slippery
-It turns red litmus paper blue.
3 0
2 years ago
During the daytime, wind blows off of the __________________ because that material takes ___________ time to get warm, creating
Butoxors [25]

Answer: sea, more

I hope this helps

5 0
2 years ago
The decomposition of dinitrogen pentaoxide has an activation energy of 102 kj/mol and \delta ? h°rxn = + 55 kj/mol. what is the
posledela
A positive cahnge of enthalpy, ΔH rxn = + 55 kJ/mol, for the forward reaction means that the reaction is endothermic, i.e. the reactants absorb energy and the products are higher in energy.

Activation energy is the difference in the energy level of the reactants and the peak in the potential energy diagram (the energy of the transition state).

For an endothermic reaction, the products will be closer in energy to the transition state than what the reactans will be; so, the activation energy of the reversed reaction is lower than the activation energy of the forward reaction.

Activation energy of reverse and forward reactions is related by:

Activation energy of reverse rxn = Activation energy of forward rxn - ΔH rxn

=> Activiation energy of reverse rxn = 102 kJ/mol - 55 kJ/mol = 47 kJ/mol

Answer: 47 kJ/mol
8 0
3 years ago
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