Answer: 5.3 moles
Explanation:
Hi, to answer this question we have to apply the next formula:
n = PV/RT
Where:
n = number of moles
P= Pressure = 2.15 atm
V= volume = 60.5 L
R = 0.0821 atm(L)/mol(K)
T = temperature = 25 °+ 273.15 = 298.15 Kelvin
Replacing with the values given:
n = 2.15 (60.5) / 0.0821 (298.15) = 5.3 moles.
Feel free to ask for more if needed or if you did not understand something.
Answer: Option (E) is the correct answer.
Explanation:
Since, it is given that the container is sealed one. So, no gas molecule is able to escape into the surrounding. Therefore, average molecular mass of the gas will remain the same.
Also, it is given that gas is cooled down from 
to 
. This means that there occurs a decrease in kinetic energy of the molecules of gas as kinetic energy is directly proportional to temperature.
Mathematically, 
Hence, sped of molecules will decrease and molecules become closer to each other with decrease in temperature.
Thus, we can conclude that following values for the gas will decrease.
- The average distance between the molecules.
- The average speed of the molecules
the answer would be d!! hope this helps
Answer:
The first is true
The second is true IF the statement means that the human body contains energy
The third is true
The fourth is false
Answer:
magnesium
Explanation:
magnesium is in Group 2, in the periodic table. this means that it has 2 valence electrons. the less valence electrons an element or atom has, the more reactive. Selenium has 6 valence electrons. as a result, Mg is more reactive
