Napisz wzory sumaryczne tlenków o podanych nazwach
1 answer:
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To find the number of gaseous molecules, we must first find the number of moles, represented by the variable 
, in the equation 
.
First, identify your constants.
The gas constant:
(These units are important!)
Volume of the flask:
Standard temperature:
(0°C)
Standard pressure:
Second, isolate the variable.
All you need to do at this point is plug in the numbers for P, V, R, and T for n. Next, we convert from mols to molecules by multiplying n by Avogadro's number,
.
Hope this helped!
First, identify your constants.
The gas constant:
(These units are important!)
Volume of the flask:
Standard temperature:
Standard pressure:
Second, isolate the variable
All you need to do at this point is plug in the numbers for P, V, R, and T for n. Next, we convert from mols to molecules by multiplying n by Avogadro's number,
Hope this helped!
<h2>Hello!</h2>
The answer is:
When the pressure that a gas exerts on a sealed container changes from
22.5 psi to 19.86 psi, the temperature changes from 110°C to
65.9°C.
<h2>Why?</h2>To calculate which is the last pressure, we need to use Gay-Lussac's law.
The Gay-Lussac's Law states that when the volume is kept constant, the temperature (absolute temperature) and the pressure are proportional.
The Gay-Lussac's equation states that:
We are given the following information:
We need to remember that since the temperatures are given in Celsius degrees, we need to convert it to Kelvin (absolute temperature) before use the equation, so:
Now, calculating we have:
Hence, the final pressure is equal to 19.86 Psi.
Have a nice day!