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Irina18 [472]
3 years ago
10

A(n)

Chemistry
1 answer:
alex41 [277]3 years ago
8 0
It should be scientific law since a hypothesis is like a prediction and a theory could be used to explain something although it might not be true. There’s many theories just to explain one thing. So it should be scientific law
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For a given mass of reactants, the energy released is greatest for a reaction involving
kari74 [83]

Answer: Option (D) is the correct answer.

Explanation:

In fusion reaction, two small nuclei combine together to result in the formation of a large nuclei.

Whereas in fission reaction, large nuclei dissociates into two or more small nuclei.

Nuclear fusion releases more energy as compared to nuclear fission.

For example, two hydrogen nuceli fuse together and result in the formation of helium atom along with release of energy.

    ^{2}_{1}H + ^{2}_{1}H \rightarrow ^{4}_{2}He + Energy

3 0
3 years ago
Read 2 more answers
How do you figure out the # of<br> neutrons?
Colt1911 [192]

Answer:

Subtracting the number of protons from the atomic mass.

5 0
3 years ago
Read 2 more answers
How would the measured ph of the diluted material compare to the ph of the original undiluted sample?
kirza4 [7]

Answer:

It would become more neutral when diluted

Explanation:

Assuming you dilute it with water, the more diluted the substance, the more neutral (and closer to 7), it would be. Ie straight lemon juice is more acidic than lemonade, which is more acidic than water. I hope this helps :)

6 0
3 years ago
Hydrogen is manufactured on an industrial scale by this sequence of reactions:
UNO [17]

Answer:

Explanation:

CH₄ +  H₂O(g)    ⇒ CO(g)+3H2(g)

Equilibrium constant

K₁ = [CO][H₂]³ / [CH₄][H₂O]

CO(g)+H₂O(g) ⇒ CO₂(g) + H₂(g)

Equilibrium constant

K₂ =  [CO₂][H₂] / [CO][H₂O]

CH₄(g)+2H₂O(g)  ⇒  CO₂(g)+4H₂(g)

Equilibrium constant

K =   [CO₂][H₂]⁴ /[CH₄][H₂O]²

=  [CO][H₂]³ / [CH₄][H₂O] X [CO₂][H₂] / [CO][H₂O]

K₁ x K₂

K = K₁ x K₂

4 0
3 years ago
Un globo lleno de helio tenia un volumen de 8.5 L en el suelo a 20°C y a una presión de 750 torr. Cuando se le soltó, el globo s
Ray Of Light [21]

Answer:

El volumen del gas era 12.95 L

Explanation:

Se relaciona la presión y el volumen mediante la ley de Boyle, que dice:

“El volumen ocupado por una determinada masa gaseosa a temperatura constante, es inversamente proporcional a la presión”

La ley de Boyle se expresa matemáticamente como:  P*V=k

Por otro lado, la Ley de Charles consiste en la relación que existe entre el volumen y la temperatura absoluta de una cierta cantidad de gas ideal, el cual se mantiene a una presión constante. Esta ley dice que cuando la cantidad de gas y de presión se mantienen constantes, el cociente que existe entre el volumen y la temperatura siempre tendrán el mismo valor:  

\frac{V}{T}=k

Por último, la Ley de Gay Lussac dice que la temperatura absoluta y la presión son directamente proporcionales. Es decir, cuando se mantiene todo lo demás constante, mientras suba la temperatura de un gas subirá también su presión. Y mientras la temperatura del gas baje, lo mismo ocurrirá con la presión:

\frac{P}{T}=k

Combinado las mencionadas tres leyes se obtiene:

\frac{P*V}{T} =k

Cuando se desean estudiar dos diferentes estados, uno inicial y una final de un gas, se puede aplicar:

\frac{P1*V1}{T1} =\frac{P2*V2}{T2}

Recordando que la temperatura debe usarse en grados Kelvin, conoces los siguientes datos:

  • P1: 750 torr
  • V1: 8.5 L
  • T1: 20°C= 293°K (siendo 0°C=273°K)
  • P2: 425 torr
  • V2: ?
  • T2: -20°C= 253 °K

Reemplazando:

\frac{750 torr*8.5 L}{293K} =\frac{425 torr*V2}{253 K}

Resolviendo:

V2=\frac{750 torr*8.5 L}{293K} *\frac{253 K}{425 torr}

V2= 12.95 L

<u><em>El volumen del gas era 12.95 L</em></u>

<u><em></em></u>

5 0
3 years ago
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