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3 years ago

As water is cooled its density increases until it reaches about _

Chemistry

2 answers:

forsale [732]3 years ago

5 0

Answer:

As water is cooled its density increases 4 degrees Celsius is reached

Explanation:

Thus water being a solvent has various physical and chemical properties it expands as gs and contracts as icy layers until it reaches a freezing point by approx 9% of water density.

Schooling of a substance causes water to slow down at a faster rate occupying a smaller rate as hot water is less dense than the room temperature as cold water is denser and will freeze at room temperature.

Thus water has to condense to a certain point to produce the desired effects.

timurjin [86]3 years ago

4 0

as water is cooled it's density increases until about 4 c then it decreases

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What is the new volume of a balloon originally at 755 torr and 5.00 l is placed in a container in which the pressure is increase

Luba_88 [7]

Answer is: volume will be 3.97 liters.

Boyle's Law: the pressure volume law - volume of a given amount of gas held varies inversely with the applied pressure when the temperature and mass are constant.

p₁V₁ = p₂V₂.

p₁ = 755 torr.

V₁ = 5.00 l.

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p₂ = 950 torr.

755 torr · 5 l = 950 torr · V₂.

V₂ = 755 torr · 5 l / 950 torr.

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Answer:

C. because the 4s orbital is at a lower energy level

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Acetic acid and ethanol react to form ethyl acetate and water, like this:

ladessa [460]

Answer:

1.) Option C is correct.

The rate of reverse reaction is greater than zero, but equal to the rate of the forward reaction.

2) Option B is correct.

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3) Option C is correct.

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4) Option A is correct.

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Explanation:

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1) Before the main product is removed from the reaction setup, the chemical reaction is at equilibrium.

Chemical equilibrium is a state of dynamic equilibrium such that the concentration of the reactants and the products do not always remain the same but the rate of forward reaction always matches the rate of backward reaction.

2) When 246. mmol of C2HCO2CH3 are removed from the reaction mixture....

And when one of the factors involved in chemical equilibrium changes, Le Chatellier's principle explains that the system then adjusts to remedy this change and takes time to go back to equilibrium again.

When one of the species involved in the chemical reaction at equilibrium, is removed from the reaction mixture, the rate of reaction begins to favour that side of the reaction until equilibrium is re-established.

So, when 246 mmol of one of the products is removed, the response is to cause the rate of forward reaction to be favoured to produce more of products as there are fewer, and the rate of reverse reaction at this moment becomes less than the rate of forward reaction.

3) The rate of the reverse reaction when the system has again reached equilibrium

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By the time equilibrium is re-established, the system goes back to how it all was and the concentration of C2H5CO2CH3 goes back to the same as it was at the start of the reaction.

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