Why is the pressure 101.3kPa significant
1 answer:
You might be interested in
Answer:
For a grating, how many lines per millimeter would be required for the first order diffraction line for λ = 400 nm to be observed at a reflection angle of when the angle of incidence is
?
<em>The number of lines per mm is 1985 lines </em>
Explanation:
A diffraction grating is used to separate a light source with multiple wavelengths into single wavelengths of different colors using the principle of diffraction.
Calculating for the spacing between the reflected surfaces
The spacing between the reflecting surfaces can be obtained using the relationship with the wavelength as shown below;
nA = d (sin i + sin r) ....................................1
where n is the order of diffraction = 1;
A is the wavelength = 400 nm
i is the angle of incidence =
r is the angle of refraction =
making d the subject formula from equation 1 we have;
...........................2
Now we substitute the given parameters into equation 2;
d =
d = 503.7 nm
The spacing between reflecting surfaces is 503.7 nm
Calculating for the number of lines per millimeter
To calculate the number of spacing per millimeter we convert nanometer to millimeters, 1 mm = and 1 line = 503.7 nm;
= 1985 lines
Therefore the number of lines per millimeter would be 1985 lines
Answer:
30.0g/mol
Explanation:
Step 1: Given data
- Mass of the gas: 0.125 g
- Pressure (P): 1 atm (standard pressure)
- Temperature (T): 273.15 K (standard temperature)
- Volume (V): 93.3 mL
Step 2: Calculate the moles of the gas
We will use the ideal gas equation.
Step 3: Calculate the molar mass of the gas
4.16 × 10⁻³ moles correspond to a mass of 0.125 g. The molar mass of the gas is: