Answer:
0.60 atm
Step-by-step explanation:
Step 1.
Data obtained from the question.
This includes the following:
Mass of Ne = 2.78g
Volume (V) = 5L
Temperature (T) = –10°C
Pressure (P) =?
Step 2:
Determination of the number of mole of Ne.
The number of mole of Ne can be obtained as follow:
Mass of Ne = 2.78g
Molar Mass of Ne = 20g/mol
Number of mole Ne =?
Number of mole = Mass/Molar Mass
Number of mole of Ne = 2.78/20
Number of mole of Ne = 0.139 mol
Step 3:
Conversion of celsius temperature to Kelvin temperature. This can be achieved by as shown below:
Temperature (Kelvin) = temperature (celsius) + 273
Temperature (celsius) = –10°C
Temperature (Kelvin) = –10°C + 273
Temperature (Kelvin) = 263K
Step 4:
Determination of the pressure. The pressure can be obtained by using the ideal gas equation as follow:
PV = nRT
Volume (V) = 5L
Temperature (T) = 263K
Number of mole (n) of Ne = 0.139mol
Gas constant (R) = 0.082atm.L/Kmol
Pressure (P) =?
PV = nRT
P x 5 = 0.139 x 0.082 x 263
Divide both side by 5
P = (0.139 x 0.082 x 263) /5
P = 0.60 atm
Therefore the pressure is 0.60 atm