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Ludmilka [50]
3 years ago
7

The nighttime and daytime temperatures on Mercury are 13 K and 683 K respectively. The melting point and boiling point of sulfur

is 246°F and 832°F. Which of the following statements is true? On Mercury sulfur exists
a. only in the liquid state.
b. only in the solid state.
c. as both a liquid and a gas.
d. as both a liquid and a solid
Chemistry
1 answer:
gizmo_the_mogwai [7]3 years ago
4 0

Answer: Option (d) is the correct answer.

Explanation:

Converting Fahrenheit into kelvin as follows.

           \frac{5}{9} \times (^{o}F - 32) + 273.15

So, 246^{o}F will be converted into kelvin as follows.

            \frac{5}{9} \times (246^{o}F - 32) + 273.15

                = 392.039 K

Also, 832^{o}F will be converted into kelvin as follows.

             \frac{5}{9} \times (832^{o}F - 32) + 273.15                                      

                = 717.594 K

As 13 K is the temperature at night time. So, it means sulfur will exist as a solid at this time because melting point of sulfur is 392.039 K.

Whereas 683 K is the temperature during day time. Hence, it means sulfur will exist in liquid state because its boiling point is 717.594 K.

Thus, we can conclude that on mercury, sulfur exists as both a liquid and a solid.

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Answer: 0.25 mol

Explanation:

Use the formula n=N/NA

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N =  number of particles

Nᵃ = Avogadros constant = 6.02 x

So, n=

The 10 to the power of 23 cancels out and you are left with 1.505/6.02, which is approximately 1/4. This is the same as 0.25 mol.

Hope this helped :)

5 0
3 years ago
A single serving bag of snack chips contains 65.0 Cal. Assuming that all of the energy from eating these chips goes toward keepi
AveGali [126]

Answer:

= 62.1 hours

Explanation:

Energy provide by the serving is 65 cal

= 65 cal  × 4.184 Kj = 271.96 kJ

271.96 KJ = 271960 J

Energy required for 1minute of energy

= 73 x 1

= 73 J/min

So, 271960 joules will be required for 271960 heart beat

Minutes = 271960 / 73

= 3593.94 minutes  

Time in hours = 3725.429 / 60

= 62.1 hours

5 0
3 years ago
1. The two qualities used to describe winds are________ and speed. 2. a local wing that blows during the day from an ocean towar
Mazyrski [523]
<span>1. The two qualities used to describe winds are direction and speed.
2. a local wind that blows during the day from an ocean toward land is a(n) sea breeze.
3. The increase in cooling that wind can cause is called the wind-chill factor.
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4 0
3 years ago
100!!!POINTS PLZ HELP Explain (on the molecular level) what pumping a tire with air will do to
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Answer:

Gases are easily compressed. We can see evidence of this in Table 1 in Thermal Expansion of Solids and Liquids, where you will note that gases have the largest coefficients of volume expansion. The large coefficients mean that gases expand and contract very rapidly with temperature changes. In addition, you will note that most gases expand at the same rate, or have the same β. This raises the question as to why gases should all act in nearly the same way, when liquids and solids have widely varying expansion rates.

The answer lies in the large separation of atoms and molecules in gases, compared to their sizes, as illustrated in Figure 2. Because atoms and molecules have large separations, forces between them can be ignored, except when they collide with each other during collisions. The motion of atoms and molecules (at temperatures well above the boiling temperature) is fast, such that the gas occupies all of the accessible volume and the expansion of gases is rapid. In contrast, in liquids and solids, atoms and molecules are closer together and are quite sensitive to the forces between them.

3 0
3 years ago
A full bottle of water was left outside overnight in freezing temperatures, causing the bottle to crack. No mass was added or re
kodGreya [7K]

Answer:The correct answer is option C.

Explanation;

Water has unique property that is, it expands on freezing.Which is the reason for less density of ice than water. The cracking of the bottle was due to the expansion of water (present inside the bottle) on freezing.

Generally, density is inversely proportional to the volume of the substance.

Density=\frac{Mass}{Volume}

Density\propto \frac{1}{Volume}

As we know ,that water expands on freezing which means that volume increases. And with increase in volume of density decreases.

Hence, the correct answer is option C.

6 0
3 years ago
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