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2 years ago

Someone please help me please

Chemistry

1 answer:

mojhsa [17]2 years ago

3 0

Answer:

1. Solid

2. Melting Point

3. liquid

4. Boiling point

5. gas

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A gas that was cooled to 200 Kelvin has a volume of 65.8 L. If its initial volume was 132.4 L, what was its initial temperature?

Mandarinka [93]

Answer:

Initial temperature, T1 = 99.4 Kelvin

Explanation:

Given the following data;

Initial volume, V1 = 65.8 Litres
Final temperature, T2 = 200 Kelvin
Final volume, V2 = 132.4 Litres

To find the initial temperature (T1), we would use Charles' law;

Charles states that when the pressure of an ideal gas is kept constant, the volume of the gas is directly proportional to the absolute temperature of the gas.

Mathematically, Charles' law is given by the formula;

$\frac {V}{T} = K$

$\frac {V_{1}}{T_{1}} = \frac {V_{2}}{T_{2}}$

Making T1 as the subject formula, we have;

$T_{1} = \frac {V_{1}T_{2}}{V_{2}}$

Substituting the values into the formula, we have;

$T_{1} = \frac {65.8 * 200}{132.4}$

$T_{1} = \frac {13160}{132.4}$

Initial temperature, T1 = 99.4 Kelvin

6 0

2 years ago

Think about the decomposition reaction of ozone.

____ [38]

Answer:

3441.6 grams.

Explanation:

2 O₃ → 3 O₂

First we convert 71.7 moles of ozone (O₃) into moles of oxygen gas (O₂), using the stoichiometric coefficients of the reation:

71.7 mol O₃ * $\frac{3molO_2}{2molO_3}$ = 107.55 mol O₂

Then we convert 107.55 moles of O₂ into grams, using the molar mass of O₂:

107.55 mol * 32 g/mol = 3441.6 g

3 0

2 years ago

SOMEONE PLEASE HELP ME ASAP PLEASE!!!!

emmainna [20.7K]

Answer:

(215 torr)(51 mL)=("x" torr)(18,500 mL) x = O.593 torr

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3 years ago

What do the broken lines mean connected to the hydrogen atoms

dmitriy555 [2]

This most likely means that the bonds have been broken.

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2 years ago

Please help me with chemistry

jok3333 [9.3K]

I will, I am in a chemistry class right now. What’s up?

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2 years ago