Answer : The total pressure in the flask is 1.86 atm.
Explanation :
First we have to calculate the pressure of gas.
Using ideal gas equation :
where,
P = Pressure of gas = ?
V = Volume of gas = 765 mL = 0.765 L (1 L = 1000 mL)
n = number of moles
w = mass of gas = 1.25 g
M = molar mass of gas = 44 g/mol
R = Gas constant =
T = Temperature of gas =
Putting values in above equation, we get:
Now we have to calculate the total pressure in the flask.
Given :
conversion used : (1 atm = 760 mmHg)
Now put all the given values in the above expression, we get:
Therefore, the total pressure in the flask is 1.86 atm.
Answer:
matter cannot be created nor destroyed
Explanation:
Hydrogen fuses into helium
Answer:
5m3
Explanation:
becuase density= mass/volume
rearrange to make = volume=mass/density
15/3= 5
Answer:
Another name of activation energy is "Needed energy" .
Explanation:
Activation energy can be imagined of as the measurement of the potential barrier (seldom described the energy barrier) distributing minima of the potential energy surface concerning the initial and ultimate thermodynamic phase. For a chemical reaction or distribution to advance at a reasonable rate, the specific temperature of the operation should be high satisfactory so that there subsists an apparent number of particles with translational energy equivalent to or higher than the activation energy. The word Activation Energy was founded in 1889 by the Swedish expert Svante Arrhenius.