A 2135 cm3 sample of dry air has a pressure of 98.4 kpa at 127 degrees Celsius. What is the volume of the sample if the Temperat
2 answers:
Answer:
The volume of the sample if the temperature is increased to 206°C when the pressure is kept constant is 3,463.07 cm³.
Explanation:
Charles's Law consists in the relationship between the volume and temperature of a certain amount of ideal gas, where constant pressure is maintained. The relationship is produced by means of a constant of proportionality. Then, at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases.
In summary, Charles's law is a law that says that when the amount of gas and pressure remain constant, the ratio between volume and temperature will always have the same value:
It is now possible to assume that you have a certain volume of V1 gas that is at a temperature V1 at the beginning of the experiment. If you vary the volume of gas to a new V2 value, then the temperature will change to T2, and it will be met:
In this case:
- V1=2135 cm³
- T1=127 °C
- V2=?
- T2=206 °C
Then:
Solving you get:
V2=3,463.07 cm³
<u><em>The volume of the sample if the temperature is increased to 206°C when the pressure is kept constant is 3,463.07 cm³.</em></u>
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Answer:
- 0.0249% Sb/cm
Explanation:
Given that:
One surface contains 1 Sb atom per 10⁸ Si atoms and the other surface contains 500 Sb atoms per 10⁸ Si atoms.
The concentration gradient in atomic percent (%) Sb per cm can be calculated as follows:
The difference in concentration =
The distance = 0.2-mm = 0.02 cm
Now, the concentration of silicon at one surface containing 1 Sb atom per 10⁸ silicon atoms and at the outer surface that has 500 Sb atom per 10⁸ silicon atoms can be calculated as follows:
= - 0.0249% Sb/cm
b) The concentration of Sb in atom/cm³ for the surface of 1 Sb atoms can be calculated by using the formula:
Lattice parameter = 5.4307 Å; To cm ; we have
=
=
The concentration of Sb in atom/cm³ for the surface of 500 Sb can be calculated as follows:
=
=
Finally, to calculate the concentration gradient
Answer: Thus 24.0 g of would be needed.
Explanation:
To calculate the moles :
According to stoichiometry :
1 mole of require = 2 moles of
Thus 0.1875 moles of will require=
of
Mass of
Thus 24.0 g of would be needed to completely react with 6.00 g of
such that all reactants could be consumed.