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3 years ago

In a closed system, how will a decrease in pressure affect the following reaction: N2O4(g) ⇌ 2NO2(g)?

Chemistry

1 answer:

timama [110]3 years ago

5 0

Answer:

Answer 'A'

Explanation:

In general, if the Σmolar volumes(g) reactants ≠ Σmolar volumes(g) products, a change in atmospheric pressure will shift the reaction equilibrium. If the pressure is increased, the rxn will shift toward the LOWER molar volume side of the rxn or if the pressure is decreased the rxn will shift toward the HIGHER molar volume side. For the reaction N₂O₄(g) ⇄ 2NO₂(g), Vm(N₂O₄(g)) < Vm(NO₂(g)) so, a decrease in atmospheric pressure would shift rxn toward the NO₂(g) side of the equation increasing the moles of NO₂(g). Also, note that if the Σmolar volumes(g) reactants = Σmolar volumes(g) products, no shift in equilibrium will occur regardless of changes in atmospheric pressure.

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pentagon [3]

Answer:

oranges: contains chemical

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bleaching protein: contains chemical

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Explanation:

A chemical is a substance that is used in or made by chemical reactions. It is a matter with compositions related to the science of chemistry. In the question,

- orange contains chemical like vitamins, protein molecules etc.

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3 years ago

How many neutrons does element ex have if it's atomic number is 58 and it's mass numbers 156

MariettaO [177]

It would have 98 neutrons.

Explanation:
The formula for finding neutrons when given the atomic number and the mass is to do (mass - atomic number.) In this case, the mass is 156 and the atomic number is 58. So we subtract 156 - 58, which gives us 98. Therefore, it would have 98 neutrons.

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3 years ago

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ArbitrLikvidat [17]

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3 years ago

Which best describes why a liquid needs a container when a solid does not?Solids fill their containers, and liquids have definit

Rina8888 [55]

The correct answer choice which best describes why a liquid needs a container when a solid does not is simply because:

Solids have definite shapes, and liquids fill their containers.

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An element is a substance which cannot be split into simpler forms by an ordinary chemical process. This simply goes to say that elements are substances which cannot be decomposed into simpler substances by ordinary chemical reactions.

An atom is the smallest unit or part of an element which can take part in a chemical reaction.

On a general note, elements are classified as thus:

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The extreme left side elements in the periodic table are metals, for example, aluminum, sodium, calcium, caesium, etc.

However, elements on the right side are generally referred to as non-metals, carbon, chlorine, oxygen,

So therefore, the correct answer choice which best describes why a liquid needs a container when a solid does not is simply because:

Solids have definite shapes, and liquids fill their containers.

Learn more about atoms and elements:

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2 years ago

Fluorine-18 is a positron emitter used in pet scans. write a balanced nuclear equation for the reaction.

kow [346]

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3 years ago

Read 2 more answers