The total pressure in the container is <u>2.02</u> atm.
<em>Step</em> 1. Calculate the<em> total number of moles.
</em>
Moles of He = 1.00 g He × (1.00 mol He/4.003 g He) = 0.2498 mol He
Moles of F₂ = 14.0 g F₂ × (1 mol F₂/38.00 g F₂) = 0.3684 mol F₂
Moles of Ar = 19.00 g Ar × (1 mol Ar/39.95 g Ar) = 0.4756 mol Ar
<em>Total moles</em> = (0.2498 + 0.3684 + 0.4756) mol = <em>1.094 mol
</em>
<em>Step </em>2. Calculate the <em>total pressure</em>.
Use the <em>Ideal Gas Law</em>: <em>pV = nRT
</em>
We can solve the equation to get the pressure:
<em>p</em> = (<em>nRT</em>)/<em>V</em>
<em>n</em> = 1.094 mol
<em>R</em> = 0.082 06 L·atm·K⁻¹mol⁻¹
<em>T</em> = (20.0 + 273.15) K = 293.15 K
<em>V</em> = 13.0 L
∴ <em>p</em> = (1.094 mol × 0.082 06 L·atm·K⁻¹mol⁻¹ × 293.15 K)/13.0 L = 2.02 atm
B. Decomposition.
<span>The electrodes used must not react with the elements thus formed; platinum is favorite for these.</span>
The possible options for the proposed multiplication or division of measurements are:
1. 9.0 km * 7.0 km = 63 km²; this is a correct option because km² is dimensionally correct.
3. 24 dL²/0.60 L = 0.24 L²/0.60 L = 0.4 L is a correct option since L is a unit of volume.
<h3>What are the possible options among the proposed multiplication or division of measurements?</h3>
The possible options among the proposed multiplication or division of measurements are those which are dimensionally correct.
Considering the given options:
1. 9.0 km * 7.0 km = 63 km²
This is a correct option because km² is dimensionally correct as it is a unit of area.
2. 2.0 g² * 0.043 kg is not correct since there is no unit of square mass.
3. 24 dL²/0.60 L = 0.24 L²/0.60 L = 0.4 L is a correct option since L is a unit of volume.
In conclusion, the correct measurements options are those that are dimensionally correct.
Learn more about measurements at: brainly.com/question/777464
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The characteristic being calculated here is the mean or the average of the data set.
To check:
(20.73 + 20.76 + 20.68 + 20.75)/4 [we divide it by 4 because there are 4 numbers]
= 82.92 / 4
= 20.73