The second gas is identified as follows
by Graham law formula
let the unknown gas be represented by letter y
=time of effusion of Neon/ time of effusion of y = sqrt (molar mass of neon/molar mass of y)
= 72 sec/ 147 sec = sqrt( 20.18 g/mol/ y g/mol)
square the both side to remove the square root sign
72^2/147^2 = 20.18 g/mol/y g/mol
=0.24 = 20.18g/mol/y g/mol
multiply both side by y g/mol
= 0.24 y g/mol = 20.18g/mol
divide both side by 0.24
y = 84 g/mol
y is therefore Krypton since it is the one with a molar mass of 84 g/mol
Propane torch is lit inside a hot air balloon during pre-flight preparation because the heat from the touch is needed to heat the cold air inside the balloon, so that the air will expand and become less dense and rise, thus providing a lift for the balloon. This is line with charle's law, which states that, the volume of a fixed mass of ideal gas is directly proportional to the absolute temperature. This law implies that, as the temperature of the air inside the balloon increase, the volume of the balloon also increases.
Answer:
29.98kg
Explanation:
12.0 gallons * (3.78541178 liters/gallon) * (1000 mL/liter) * (0.66 g/mL) * (1 kg/1000 g) = 29.98 kg
Answer:
9.70 × 10^4 is equal to 97000
Answer: C. 25.6 kPa
Explanation:
The Gauge pressure is defined as the amount of pressure in a fluid that exceeds the amount of pressure in the atmosphere.
As such, the formula will be,
PG = PT – PA
Where,
PG is Gauge Pressure
PT is Absolute Pressure
PA is Atmospheric Pressure
Inputted in the formula,
PG = 125.4 - 99.8
PG = 25.6 kPa
The gauge pressure inside the container is 25.6kPa which is option C.
