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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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What makes a metal and a non metal most
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Answer:

Explanation:

The reactivity of elements in the periodic table is based on the number of electrons in there outermost shell. Elements (metals) that have few electrons in there outermost shell are highly reactive because it is easier to lose fewer number of electrons (in the outermost shell during a reaction) than to lose more electrons in the outermost shell - thus metals that have one electron in there outermost shell are most reactive and are more reactive than those that have two electrons in there outermost shell. Hence, metals in group 1 are the most reactive metals because they all have one electron in there outermost shell.

Non-metals that have fewer electrons to complete there octet configuration are highly reactive because it is easier to gain fewer number of electrons (in the outermost shell during a reaction) than to gain more number of electrons - thus nonmetals that have seven electrons in there outermost shell are more reactive than nonmetals that have six electrons in there outermost shell. Hence, nonmetals in group 17 are the most reactive nonmetals because they contain seven electrons and have just one electron left to complete there octet configuration.

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2 years ago
Do two objects with the same mass always have the same volume
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Concerning Boyle's Law, if you had a gas at a pressure of 101 kPa and decreased the volume of the container holding the gas to o
Viefleur [7K]

Answer:

P_2=404 kPa

Explanation:

Hello,

In this case, the Boyle's is mathematically defined via:

P_1V_1=P_2V_2

Which stands for an inversely proportional relationship between volume and pressure, it means the higher the volume the lower the pressure and vice versa. In such a way, since the volume is decreased to one quarter, we can write:

V_2=\frac{1}{4} V_1

We can compute the new pressure:

P_2=\frac{P_1V_1}{V_2} =\frac{P_1V_1}{\frac{1}{4} V_1} =\frac{101kPa*V_1}{\frac{1}{4} V_1} \\\\P_2=4*101kPa\\\\\\P_2=404 kPa

Which means the pressure is increased by a factor of four.

Regards.

7 0
2 years ago
Potassium chlorate (used in fireworks, flares, and safety matches) forms oxygen and potassium chloride when heated. KClO3(s) → K
Zina [86]

Answer:

10.3 g of oxygen are formed when 26.4 g of potassium chlorate is heated

Explanation:

This is the balanced equation:

2KClO₃(s) → 2KCl(s) + 3O₂(g)

Ratio beteween the salt and oxygen is 2:3

Molar mass of KClO₃ = 122.55 g/m

Let's find out the moles of salt

Mass / Molar mass

26.4 g /122.55 g/m = 0.215 moles

So, this is the final rule of three:

If 2 moles of KClO₃ make 3 moles of oxygen

0.215 moles of KClO₃ make  (0.215  .3) /2 = 0.323 moles of O₂ are produced

Molar mass O₂ = 32 g/m

Moles . molar mass = mass

0.323 m  . 32g/m = 10.3 g

4 0
3 years ago
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