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Lyrx [107]
3 years ago
7

What pressure, in torr, would a sample of Xenon exert if it were compressed from 4001 mL to 3002 mL at constant temperature, giv

en that initially the pressure was 750.1 atm?
Chemistry
1 answer:
Andreyy893 years ago
8 0

Answer:

759779.6 torr

Explanation:

Initial volume, V₁ = 4001 mL

Final volume, V₂ = 3002 mL

Initial pressure, P₁ = 750.1 atm

We need to find the final pressure at a constant temperature. Let it be P₂. P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{750.1\times 4001 }{3002 }\\\\P_2=999.71\ atm

We know that,

1 atm = 760 torr

So,

999.71 atm = 759779.6 torr

Hence, there will be 759779.6 torr pressure.

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Reaction B could produce a substance with a pH of...<br><br> 14.<br><br> 4.<br><br> 10.<br><br> 7.
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Answer:

Explanation:

14: Sodium Hydroxide

4: lemon juice.

10: milk of magnesia ; The great Salt Lake

7: pure water

4 0
3 years ago
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Which type of reaction is indicated by a positive AH?
lianna [129]

Answer:

An endothermic reaction

Explanation:

A positive sign indicates that energy is absorbed. Hence it is an endothermic reaction.

A reversible reaction is indicated by a double arrow on the chemical equation.

A spontaneous is indicated by negative Gibbs Free Energy (G) value.

An exothermic reaction is indicated by a negative enthalpy change

5 0
3 years ago
Adding copper or magnesium to aluminum creates an alloy that is _____. more flammable than magnesium heavier than steel stronger
Maksim231197 [3]

stronger than aluminum

5 0
3 years ago
Read 2 more answers
If the formation of NaCl proceeds according to the following equation and change in enthalpy, what is the reaction and change in
Sergio039 [100]

Answer:

  • <em>2NaCl → 2Na + Cl₂, ΔH = 822 kJ </em>

Explanation:

The chemical <em>equation</em> for the <em>formation of NaCl</em> is:

  • Na + (1/2) Cl₂ → NaCl , ΔH = - 411 kJ

That equation means that 1 mole of NaCl is formed by the reaction of 1 mole of Na and 1/2 mole of Cl₂, with a release of energy of 411 kJ.

The <em>decomposition</em> of <em>NaCl</em> is the inverse of the <em>formation</em> reaction; thus, you swift products and reactants and inverse the sign of the <em>change in enthalpy:</em>

  • NaCl → Na + 1/2 Cl₂, ΔH = 411 kJ

Since you want the decomposition of 2 moles you multiply the equation and the ΔH by 2:

  • 2NaCl → 2Na + Cl₂, ΔH = 822 kJ ← answer

3 0
3 years ago
The natural distribution of the isotopes of a hypothetical element is 60.795% at a mass of 281.99481 u, 22.122% at a mass of 283
fenix001 [56]

<u>Answer:</u> The average atomic mass of the element is 283.291 amu

<u>Explanation:</u>

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i   .....(1)

  • <u>For isotope 1:</u>

Mass of isotope 1 = 281.99481 amu

Percentage abundance of isotope 1 = 60.795 %

Fractional abundance of isotope 1 = 0.60795

  • <u>For isotope 2:</u>

Mass of isotope 2 = 283.99570 amu

Percentage abundance of isotope 2 = 22.122 %

Fractional abundance of isotope 2 = 0.22122

  • <u>For isotope 3:</u>

Mass of isotope 3 = 286.99423 amu

Percentage abundance of isotope 3 = [100 - (60.795 + 22.122)] = 17.083 %

Fractional abundance of isotope 1 = 0.17083

Putting values in equation 1, we get:

\text{Average atomic mass of element}=[(281.99481\times 0.60795)+(283.99570\times 0.22122)+(286.99423\times 0.17083)]\\\\\text{Average atomic mass of element}=283.291amu

Hence, the average atomic mass of the element is 283.291 amu

5 0
4 years ago
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