Chemistry High School

250 mL of argon gas is held in a flexible vessel shown above. If the pressure changes to 12.0 atm, what is the new volume of
the gas at 20 C?

250 ML Of Argon Gas Is Held In A Flexible Vessel Shown Above. If The Pressure Changes To 12.0 Atm, What

Answers

Answer 1

The new volume of the gas at 20 °C is 205 mL

The correct answer to the question is Option C. 205 mL

From the question given, the following data were obtained:

Initial volume (V₁) = 250 mL

Initial temperature (T₁) = 25 °C = 25 + 273 = 298 K

Initial pressure (P₁) = 10 atm

Final temperature (T₂) = 20 °C = 20 + 273 = 293 K

Final pressure (P₂) = 12 atm

Final volume (V₂) =?

The new volume of the gas can be obtained by using the combine gas equation as follow:

[tex] \frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2} \\ \\ \frac{10 \times 250}{298} = \frac{12 \times V_2}{293} \\ \\ cross \: multiply \\ \\ 298 \times 12 \times V_2 = 10 \times 250 \times 293 \\ \\ divide \: both \: side \: by \: 298 \times 12 \\ \\ V_2 = \frac{10 \times 250 \times 293}{298 \times 12} \\ \\ V_2 = 205 \: mL \\ [/tex]

Therefore, the new volume of gas is 205 mL

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Define valence electrons.

Answers

Answer:

Electrons on the outermost shell of an atom. They are responsible for the chemical properties of an atom.

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Given the balanced chemical equation:

4 Fe + 3 O2 ----> 2 Fe2O3

How many moles of iron(III) oxide, Fe2O3 , will be produced if 12 moles of oxygen gas, O2 , are consumed

Answers

Answer:

8 moles of Fe2O3

Explanation:

You can use the mole ratio give. For every 3 O2 you produce 2 Fe2O3. With this you can find the number of moles. 12 O2 multiplied by the ratio 2/3 gives you 8 moles

Is krypton a good or poor conductor of electricity? Why? I

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Answer:

No it is not a good conductor

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What is the chemical name of NaCl₂

Answers

Answer:

It’s sodium chloride

Explanation:

Hope that helps

It is Sodium chloride

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The melting and boiling point tests will MOST help them to infer the strength of intermolecular forces between ionic and covalent compounds?

Question 12 options:
True
False

Answers

Answer:

True po

Explanation:

Sana nakatutulong

#Carry on learning

Ionic compounds have higher melting and boiling point than covalent compounds, since ionic bonds are stronger than covalent bonds. Hence, we can compare the intermolecular forces using melting or boiling points.

What is boiling point?

Boiling point of a substance is the temperature at which the substance changes from liquid state to gaseous state. Melting point is the temperature at which the substance changes from solid state to liquid state.

Both melting point and boiling point depends on the bond type, molecular weight, temperature and pressure. Stronger the bond , higher energy needed to weaken the intermolecular force between molecules to convert them to liquid state or vapour state.

Hence, the temperature that have to be applied to loosen the bonds to boil them or melt them increases as bond strength increases. Therefore, these physical quantities definitely helps to infer the strength of bonds.

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If 5.3 g of gallium reactions with 5.3 g of oxygen according to the following reaction, how many grams of gallium oxide can be produced?
Word equation:



Formula equation:

(Must be balanced!)

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Answer:

can you help mine please

How many molecules of chlorine are needed to react with 56.Og of iron to form Iron (III) chloride (FeCl3)?

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Which picture correctly shows the path of the reflected light ray?

Select one:
a. A
b. B
c. C
d. D​

Answers

The picture that correctly shows the path of the reflected light ray is: Picture A.

A ray diagram can be defined as the graphical representation of the possible paths that a light wave takes from one point (source) to another.

Basically, some of the phenomenon and properties associated with light ray include the following:

RefractionDiffractionInterferenceReflection

A reflected light ray completely bounces off a surface and as such, light wave do not pass through the surface as illustrated in Picture A.

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Angle I in the picture below is the angle of...

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Answers

Angle I in the picture above is the angle of incidence

The angle I and shown can rightly be called the angle of reflection.

According to the laws of reflection, the incident ray, the reflected ray and the normal all lie on the same plane. This gives us the idea that when two angles lie on the same plane as the normal, it may be a case of reflection.

On the basis of what has been said above, the angle I and shown can rightly be called the angle of reflection.

Finally, from the image, we can clearly see that angle I is the angle of reflection.

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