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3 years ago

What state (solid, liquid, gas) is mercury in at the boiling point of water, 100°C? Explain.

Chemistry

1 answer:

serious [3.7K]3 years ago

8 0

Mercury is in a liquid state

Mercury's melting point is somewhere around -34 Degrees Celcius. Thus it should be assumed it will be a liquid at this temperature. Not a gas however as mercury's boiling point is somewhere in the 600 Degree range

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How many half-lives are required for the concentration of reactant to decrease to 1.56% of its original value?4247.56.56

neonofarm [45]

Answer:

6 half-lives are required for the concentration of reactant to decrease to 1.56% of its original value.

Explanation:

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t

$[A_0]$ is the initial concentration

Given:

Concentration is decreased to 1.56 % which means that 0.0156 of $[A_0]$ is decomposed. So,

$\frac {[A_t]}{[A_0]}$ = 0.0156

Thus,

$\frac {[A_t]}{[A_0]}=e^{-k\times t}$

$0.0156=e^{-k\times t}$

kt = 4.1604

The expression for the half life is:-

Half life = 15.0 hours

$t_{1/2}=\frac {ln\ 2}{k}$

Where, k is rate constant

So,

$k=\frac {ln\ 2}{t_{1/2}}$

$\frac{4.1604}{t}=\frac {ln\ 2}{t_{1/2}}$

$t = 6\times t_{1/2}$

<u>6 half-lives are required for the concentration of reactant to decrease to 1.56% of its original value.</u>

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4 years ago

An ideal gas is made up of gas particles that

Hatshy [7]

Answer:

no it is mad out of gas

Explanation:

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4 years ago

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How would the boiling point of water be affected if you doubled the amount of water?

Flauer [41]

Answer:

The boiling point wouldn´t be effected. The amount of time it would take to get it to that point would increase

Explanation:

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3 years ago

Sometimes people do not want to change their belief regardless of the evidence.

bagirrra123 [75]

Answer:

True

Explanation:

Ex. People against vaccines tend to believe crazy theories over facts because they think they'll end up brainwashing them.

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3 years ago

When does boiling occur?

butalik [34]

Water boils at 100 Degrees Celsius or 212 degrees Fahrenheit

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4 years ago