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Setler [38]
3 years ago
8

A gas has a volume of 25.6 L at a temperature of 278 K. What will be the new temperature, in C, if

Chemistry
1 answer:
BigorU [14]3 years ago
6 0
<h2>Hello!</h2>

The answer is: -97.23° C

<h2>Why?</h2>

Applying the Charles and Gay-Lussac's Law we have that:

\frac{V}{T}=k

Where:

<em>k </em>is the proportionality constant

<em>v</em> is the volume of the gas

<em>t</em> is the temperature of the gas

We also have the following relation:

\frac{V1}{T1}=\frac{V2}{T2}

Since we need to know the new temperature (T2) we can find it using the last equation, so:

\frac{V1}{T1}=\frac{V2}{T2}\\\\T2=\frac{V2*T1}{V1}=\frac{16.2L*278K}{25.6L}=175.92K

We are asked to find the temperature in Celsius degrees, we must convert the result:

Celsius=K-273.15=175.92-273.15=-97.23

Therefore, the temperature is -97.23° C

Have a nice day!

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Answer:

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Explanation:

Hello,

In this case, since hydrochloric acid and barium hydroxide are in a 2:1 molar ratio, for the neutralization, the following moles equality must be obeyed:

2*n_{HCl}=n_{Ba(OH)_2}

In such a way, in terms of molarities and volumes, we can compute the required volume of hydrochloric acid as shown below:

2*M_{HCl}V_{HCl}=M_{Ba(OH)_2}V_{Ba(OH)_2}\\\\V_{HCl}=\frac{M_{Ba(OH)_2}V_{Ba(OH)_2}}{2M_{HCl}} =\frac{0.101M*0.050L}{2*0.50M} \\\\V_{HCl}=5.05x10^{-3}L

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Why do you think the atomic number is basically represented by the number of protons and not the number of electrons?
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The atomic number equals the charge on the nucleus. It therefore also equals the number of protons in the nucleus and also equals numerically the number of electrons in the neutral atom. i think so, hope this helps you

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ako ne razumiješ, obrati mi pažnju

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A slender uniform rod 100.00 cm long is used as a meter stick. two parallel axes that are perpendicular to the rod are considere
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Refer to the diagram shown below.

The second axis is at the centroid of the rod.
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