3. Sulfur dioxide (SO2) can be reduced by hydrogen disulfide (H2S), producing sulfur in its elemental form and water (H2O). Using Hess’s law and the reactions below, determine the overall enthalpy for the reaction between SO2 and H2S. Make to clearly show your work.H2 (g) + S (s) → H2S (g) ΔH = –20.6 kJ
SO2 (g) → S (s) + O2 (g) ΔH = +296.8 kJ
2H2 (g) + O2 (g) → 2H2O (g) ΔH = –285.8 kJ

Answers

Answer 1

Answer: The reaction between h2s and so2 results to h20 and elemental sulfur. The final reaction is SO2 +2H2S = 3S+ 2H2O. Using Hess law, the first equation is reversed and multiplied by 2, the second and the third equation remains the same. Calculating the overall enthalpy, the answer is 52.2 kJ.

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The range in size of most atomic radii is approximately _____.5 × 10−11 m to 2 × 10−10 m
2 to 5 nm
5 × 10−21 m to 2 × 10−20 m
2 to 5 cm

Answers

The atomic radii is approximately between 5 × 10−11 m to 2 × 10−10 m

The range in size of most atomic radii is approximately 5 × 10−21 m to 2 × 10−20 m. The rest of the choices do not answer the question above.

The direct change of a substance from a solid to a gas is called ____.a. evaporation
c. condensation
b. sublimation
d. solidification

Answers

The direct change of a substance from a solid to a gas is called sublimination.

The answer to your question

b. sublimation

In Rutherford's gold foil experiments, some alpha particles were deflected from their original paths but most passed through the foil with no deflection. Which statement about gold atoms is supported by these experimental observations

Answers

The experiment shows that the atoms are mostly empty spaces with most of the mass concentrated at the center, which is the nucleus of the atom.

What are Rutherford's experiments?

Rutherford's model also called Rutherfords' atomicmodel was a model describing the nuclear atom or the planetary model of the atom. It gave a description of the structure of atoms.

It was proposed the year 1911 by the New Zealand-born physicist named ErnestRutherford. This model was used to describe the atom. It described the atom as tiny and dense which has a positively charged core called the nucleus.

In the nucleus of the atom, almost all the mass is the atom is concentrated. Around the nucleus, there are the light, negative particles which are called electrons. These circulate around the nucleus at some distance like planets revolve around the Sun.

Therefore, the experiment shows that the atoms are mostly empty spaces with most of the mass concentrated at the center, which is the nucleus of the atom.

Answers

Answer:

Multiuse nail forms.

Explanation:

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Waves move fastest in low-temperature gases. low-temperature solids. high-temperature gases. high-temperature solids.

Answers

Answer: Option (d) is the correct answer.

Explanation:

At high temperature, there will be more collision between the molecules as a result more energy will generate. Thus, a wave can move quickly.

In case of solids, the particles are held more closely with each other. Therefore, when temperature is high then solid particles being closer can pass on the energy more quickly as compared to gases.

Thus, we can conclude that waves move fastest in high-temperature solids.

Final answer:

In Physics, waves move fastest in high-temperature solids due to the close proximity of particles which facilitates faster wave transmission and the increased kinetic energy at high temperatures.

Explanation:

In the study of Physics, the speed of sound waves varies depending on the properties of the medium through which they are traveling. Solids have tightly packed particles which facilitate faster wave transmission. Conversely, gases have loosely packed particles which slow down wave travel. Temperature, while affecting speed at some level, doesn't have as significant an influence as the state of matter itself.

Therefore, among the options you provided: low-temperature gases, low-temperature solids, high-temperature gases, and high-temperature solids, waves move fastest in high-temperature solids.

This is due to the increased kinetic energy of the particles in a high-temperature solid as compared to a low-temperature solid; and the closer proximity of particles in a solid as compared to a gas.