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Jobisdone [24]
3 years ago
8

Cómo se puede comprobar el efecto universo​

Chemistry
2 answers:
ch4aika [34]3 years ago
7 0

Answer:

???! huhhhjhhh no I speak English

Explanation:

?

WARRIOR [948]3 years ago
4 0

Answer:

vifucivud UKvi uiiijhhh

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What is the mass number of the isotope of calcium (ca) containing 20 neutrons?
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Answer:

the mass number is 40 g/mole

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4 years ago
If a reaction mixture contains only N2O and NO2 at partial pressures of 1.0 atm each, the reaction will be spontaneous until som
Vesna [10]

Answer:

Temperature required = 923K

Explanation:

The question is incomplete as there are some details that has to be given. details like the values of the standard enthalpies and entropies of the reactants and product as this is needed to calculate the actual value of the standard enthalpies and standard entropies of the reaction. I was able to get those values from literature and then calculated what needs to be calculated.

From there, I was able to use the equation that shows the relationship between, gibb's free energy, enthalpy, entropy and temperature. The necessary mathematical manipulation were done and the values were plugged in to get the temperature required to make the reaction spontaneous.

A few notes on the Gibb's free energy.

The Gibb's free energy also referred to as the gibb's function represented with letter G. it is the amount of useful work obtained from a system at constant temperature and pressure. The standard gibb's free energy on the other hand is a state function represented as Delta-G, as it depends on the initial and final states of the system.

The spontaneity of a reaction is explained by the standard gibb's free energy.

  • If Delta-G = -ve ( the reaction is spontaneous)
  • if Delta -G = +ve ( the reaction is non-spontaneous)
  • if Delta-G = 0 ( the reaction is at equilibrium)

The step by step calculations is done as shown in the attachment.

3 0
3 years ago
What is demetri mendeleyev given credit for developing
Naddik [55]

Answer: The periodic table

Explanation: Demetri Mendeleyev is famous for developing the periodic table. He introduced it in 1869.

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Which type of fuel can only be used in certain geographic area? A. natural gas B. nuclear C. solar D. Biomass
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A

Explanation:

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C) Stars get born, get older, then eventually die.
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