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3 years ago

A reaction mixture is at equilibrium. What happens when the amount of one of the

Chemistry

1 answer:

11Alexandr11 [23.1K]3 years ago

3 0

Answer:

The equilirbium shifts to side where the reactant is lowered so that the reactant comes back to normal level for equilibrium.

Explanation:

This is the basic premise of Le Chatelier's principle which can be used to predict the effect of a change in conditions on some chemical equilibria.

If A--->B is at equiblirum and if concentration of A goes down, then the equilirbium shifts left to make more A.

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Large objects that form dense gravity wells in space A. Galaxies B. Star C. Nebulae D. Black holes.

BigorU [14]

Answer:

D. Black Holes

Explanation:

Black holes are large objects that form dense gravity wells in space. Their gravitational pull is so strong that even light cannot escape it.

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3 years ago

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Ammonia, NH3 is a common base with Kb of 1.8 X 10-5. For a solution of 0.150 M NH3:

Vesnalui [34]

The concentrations : 0.15 M

pH=11.21

<h3>Further explanation</h3>

The ionization of ammonia in water :

NH₃+H₂O⇒NH₄OH

NH₃+H₂O⇒NH₄⁺ + OH⁻

The concentrations of all species present in the solution = 0.15 M

Kb=1.8 x 10⁻⁵

M=0.15

$\tt [OH^-]=\sqrt{Kb.M}\\\\(OH^-]=\sqrt{1.8\times 10^{-5}\times 0.15}\\\\(OH^-]=\sqrt{2.7\times 10^{-6}}=1.64\times 10^{-3}$

$\tt pOH=-log[OH^-]\\\\pOH=3-log~1.64=2.79\\\\pH=14-2.79=11.21$

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3 years ago

Which subatomic particle do you think is most important to an atom’s identity?

Sonja [21]

The subatomic particle that identifies the atom is the number of protons. This is what distinguishes an element that is is flammmable, hydrogen to one that is essential component in water, oxygen.

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3 years ago

Which of the following shows a decrease in entropy?

shusha [124]

Precipitation hope this helped you

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3 years ago

PLZ HELP ME WITH MY WORK

Delvig [45]

Answer:

neutrons should be added with the protons

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3 years ago