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lilavasa [31]
3 years ago
11

Which of the following best defines weather?

Chemistry
1 answer:
brilliants [131]3 years ago
6 0
C

Everyday, ever hour and so on the weather changes, when looking at the weather on an app or website, the weather is defined by the conditions at a certain time. Hope this helps!
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Consider the following equation. Fe2O3(s) 3H2(g) Right arrow. 2Fe(s) 3H2O(g) Delta. H = 98. 8 kJ, and Delta. S = 141. 5 J/K. Is
mestny [16]

The reaction is spontaneous at high temperatures, and non-spontaneous at low temperatures.

In a thermodynamically closed system, the measure of the non-expansion work by the system and the enthalpy and the entropy is said to be the <u>Gibbs free energy</u>.

<h3>How to determine the Gibbs free energy?</h3>

According to the reaction, the enthalpy change (\rm \Delta H) and the change in the entropy (\rm \Delta S) is positive. The Gibbs free energy is given by, \rm \Delta G = \Delta H - T \Delta S and the reaction will be spontaneous only when the \rm\Delta G is negative.

If there is not much effect on the enthalpy and entropy due to a decrease in temperature, then the value of the Gibbs free energy will be positive and will be close to that of the enthalpy change. In the above reaction enthalpy, change is positive and hence the reaction will be non-spontaneous.

When the temperature is increased then the entropy will affect the overall reaction as the Gibbs free energy will have the opposite sign as that of the entropy. So the reaction will become spontaneous at high temperatures.

Thus, option A is correct.

Learn more about Gibbs free energy here:

brainly.com/question/7988114

4 0
2 years ago
Store bought cake mix is usually left to bake at 350°F in an oven, what would happen to the time it
lesya692 [45]

Answer:

It will reduce

Explanation:

The time it will take to bake the cake will reduce when the temperature is increased by an additional 20°F .

Temperature change has a considerable effect on reaction rates since temperature is directly proportional to the average kinetic energy of reacting particles.

Generally reaction rate varies as temperature directly.

Therefore, the baking time will reduce as temperature increases.

4 0
3 years ago
Giving max amount of points, I just need this answered. It's a K12 assignment. Using the room temperature line (orange line) and
slamgirl [31]

Answer:

H-1 solid                               Ne-10 Liquid

He-2 Solid                            Na-11 Liquid

Li-3 Liquid to Gas                 Mg-12 Gas

Be-4 Gas                              Al-13 Gas

B-5 Gas                               Si-14 Gas

C-6 Gas                                P-15 Liquid to Gas

N-7 Liquid                             S-16 Liquid to Gas

O-8 Liquid                             CI-17 Liquid

F-9 Liquid                              Ar-18 Liquid

     >>>>>>>>>>>>>>             K-19 Gas

                                              Ca-20 Gas

8 0
3 years ago
How does the composition of the nucleus change during fission, fusion, and radioactive decay?
Tresset [83]
Fusion, fission, and radioactive decays of unstable nuclei, involve release or absorption of energy. The total number of neutrons plus protons does not change in any nuclear process. are not conserved, but the total number of protons plus neutrons is conserved.
3 0
3 years ago
What is the relationship between the kinetic energy of molecules in an object nd the objects temperature?
Lady bird [3.3K]

It is C. An increase of temperature results in an increase in kinetic energy of the molecules of the substance.  For example, in a gas the molecules will move about faster.

3 0
4 years ago
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