CHEMISTRY HIGH SCHOOL

HELP ASAPFor the reaction A(g) → 2B(g), Keq = 4.5 × 105. Which statement is true for the system at equilibrium?
a) [A] >> [B]
b)Changing the temperature will have no affect on the equilibrium.
c)There is twice as much A as there is B in the reaction vessel.
d)There is more than 100 times more B then there is A in the reaction vessel.
e)There is twice as much B as there is A in the reaction vessel.

Answers

Answer 1
Answer: The correct answer for the question that is being presented above is this one: "d)There is more than 100 times more B then there is A in the reaction vessel." The statement is true for the system at equilibrium is that d)There is more than 100 times more B then there is A in the reaction vessel. 

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When two continental plates of similardensities collide,
A. they remain level since densities in both plates are equal.
B. they both push back down into the mantle
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D.they buckle upward and form mountains

Answers

Answer:

D. They buckle upward and form mountains.

Explanation:

When two plates (either oceanic or terrestrial) converge and they are of similar density then they will crash into each other and form mountains. A great example of this is when India crashed into the Asian continent and the Himalayas were formed.

In order to separate two substances by fractional crystallization, the two substances must differ in which of the following?(A) solubility
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Answers


I would say vapor pressure, but I could be wrong. Good luck ^^

Whose work directly resulted in the development of an atomic model that has negative electrons stuck within a sea of positive material?

Answers

The discoverer of the electron was Thomson. J. J. Thomson portrayed his atom model to look like a plum pudding. In his model, he described that an atom is composed mainly of electrons stuck within a sea of positive material.

Final answer:

The 'plum pudding' model of the atom, which depicted negative electrons embedded in a positively charged mass, was proposed by J.J. Thomson in 1904. This model was later superseded by Ernest Rutherford's nuclear model, which described the atom as having a central, positively charged nucleus surrounded by orbiting electrons.

Explanation:

The atomic model that portrays negative electrons embedded within a sea of positive material is known as the 'plum pudding' model. This model was proposed by J.J. Thomson in 1904. It describes an atom as being primarily composed of an unknown positively charged mass, with negative electrons interspersed within, akin to plums in a pudding.

Thomson's model was a significant step forward in atomic theory, but it was also fundamentally flawed. It was eventually superseded by the nuclear model of the atom, proposed by Ernest Rutherford and his colleagues in 1911. Rutherford's model proposed that most of the atom's mass and its positive charge is concentrated in a central nucleus, with the negative electrons orbiting this central core, rather like the planets orbit the sun. This model more accurately accounts for atomic behavior and structure as we understand them today.

Learn more about Atomic Models here:

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The mass of an object is constant, but its weight may change depending on:

Answers

Answer:

gravity

Explanation:

your mass is the same on the moon as is on earth or underwater but your weight changes because of gravity

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Answers

Electronegativity values are useful in determining if a bond is to be classified as nonpolar covalent, polar covalent or ionic. The electronegativities of oxygen and nitrogen are respectively, 3.44 and 3.04 on Pauling scale, the electronegativity difference being, 0.4. The bond is considered to be non-polar covalent.
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Answers

There are 2 carbon atoms in ethanoic acid. Other name of such substance is acetic acid. It is a colorless liquid carboxylic acid with the chemical formula CH3COOH. It has antibacterial and antifungal properties.
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