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Reil [10]
4 years ago
5

Predict the shift in the equilibrium position that will occur for each of the following reactions when the volume of the reactio

n container is increased.
a. 2 NH3 (g) ↔ N2 (g) + 3 H2 (g)
b. PCl5 (g) ↔ PCl3 (g) + Cl2 (g)
c. 2 HF (g) ↔ H2 (g) + F2 (g)
d. COCl2 (g) ↔ CO (g) + Cl2 (g)
e. CaO (s) + CO2 (g) ↔ CaCO3 (s)
Chemistry
1 answer:
gizmo_the_mogwai [7]4 years ago
4 0

Answer:

Explanation:

a. An increase in  volume will favour the forward reaction, thus more product formation.

b.  An increase in volume will favour the forward reaction, thus more product formation.

c.   An increase in volume will have no effect on the equilibrium and thus there is no shift in the direction because they both have equal number of moles of reactants and products.

d.  An increase in volume will favour the forward reaction, thus more product formation.

e. There is no effect on the equilibrium system in terms of volume change because of the presence of solid substance in the reactant and products.

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How many moles is<br> 55 g of Naci?<br> 0.025 g of NaCO3?
mart [117]

Answer:

0.940mol &

0.000301mol respectively.

Explanation:

number of moles = given mass / molar mass

given mass of Nacl = 55g Molar mass = 23 + 35.5

n=m/M = 55g/58.5g/mol = 0.940mol

note- (add the atomic weights of sodium and chlorine to get the molar mass of Nacl.) = 58.5g/mol

similarly, NaCO3 = 23 + 12 + 16*3 = 83g/mol

n=m/M = 0.025g/83g/mol = 3.01 * 10^-4 = 0.000301mol

extra: If you ever get asked to put it in number of particles just use the relation of 1mole = 6.02 * 10^23 particles.

8 0
3 years ago
What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom
Alik [6]
  • <em>n</em> = 3
  • <em>l</em> = 0
  • m_l = 0
  • m_s = 1/2 or -1/2
<h3>Explanation</h3>

There are four quantum numbers in an electron that orbits the atom.

  • <em>n</em>, the principal quantum number.
  • <em>l</em>, the angular quantum number.
  • m_l, the magnetic quantum number.
  • m_s, the spin quantum number.

<em>n</em> is a positive integer. The value of n indicates the main shell of the electron. The electron in question is in the 3s orbital. As a result, <em>n</em> = 3.

<em>l</em> is a non-negative integer. The value of <em>l</em> indicates the type of subshell ("orbital") of the electron. The types of subshells possible depends on the main shell. For example, both s and p orbitals exist in the second main shell. However, only the s orbital exists in the first main shell. The value of <em>l</em> ranges from 0 to <em>n</em> - 1.

  • <em>l</em> = 0 indicates an <em>s</em> orbital.
  • <em>l</em> = 1 indicates a <em>p</em> orbital.
  • <em>l</em> = 2 indicates a <em>d</em> orbital.
  • <em>l</em> = 3 indicates an <em>f</em> orbital.

The electron in question is in an <em>s</em> orbital. As a result, <em>l </em>= 0.

m_l is an integer. The value of m_l indicates the position of the electron within the subshell. The range of m_l depends on the value of <em>l</em>. m_l ranges from -<em>l</em> to <em>l </em>(that's <em>-l</em>, ..., -1, 0, 1, ... <em>l</em>). Accordingly, there are 2 <em>l</em>  + 1 orbitals in a <em>l</em> subshell. <em>l </em>= 0 for this 3s<em> </em>electron. There's only one orbital in the 3s subshell. The only m_l value possible for this electron is 0.

The value of m_s is either - 1/2 or 1/2. It indicates the position of an electron within a single orbital. The value of m_s does not depend on that of <em>n</em>, <em>l</em>, or m_l. However, by the Pauli Exclusion Principle, at least one of the four numbers must differ for two electrons in the same atom. In case all three of <em>n</em>, <em>l</em>, and m_l are the same, the two electrons must differ in m_s. However, this question asks only for the number of one single electron. Thus, giving either - 1/2 or 1/2 shall work.

<h3>Reference</h3>

Vitz et. al, "5.8 Quantum Numbers (Electronic)",  <em>ChemPRIME (Moore et al.)</em>, Chemistry Libretexts. 27 Oct 2017.

7 0
4 years ago
What are the three types of seismic waves?
Softa [21]
Earthquakes generate three types of seismic waves<span>: P (primary) </span>waves<span>, S (secondary) </span>waves<span> and surface </span>waves<span>, which arrive at </span>seismic<span> recording stations one after another. Both P and S </span>waves<span>penetrate the interior of the Earth while surface </span>waves<span> do not. Due to this, P and S </span>waves<span> are known as "body </span>waves<span>".


hope that helped</span>
5 0
4 years ago
Read 2 more answers
What is the mass of an aluminum cylinder that has a volume of 1.50m^3
lawyer [7]

<span>To approximate the mass of aluminum cylinder, we use the data on density and the volume of the substance. Density is the mass of a substance over the volume it occupies. Density of aluminum is equal to 2.7 kg/L density and a volume of 1.5 m3 or 1500 L. We multiply the two to get 4.05 kilograms of aluminum cylinder.</span>

6 0
3 years ago
How can I get the volume of density
Flura [38]
Divide the mass by the density to get the volume
6 0
3 years ago
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