The equation is KE= 1.5 nRT
R = gas constant and it equal to 8.314 J/K- mol
T = Temperature
<span> Temperature for this problem is 125 Kelvin and n is equal to 1 mole.
Hope that helps u
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Answer:
nine
There are nine orbitals in the n = 3 shell. There is one orbital in the 3s subshell and three orbitals in the 3p subshell. The n = 3 shell, however, also includes 3d orbitals. The five different orientations of orbitals in the 3d subshell are shown in the figure below.
Explanation:
Atomic mass Ca = 40 a.m.u
1 mole Ca ----------- 40 g
2.5 mols Ca -------- ( mass Ca )
Mass Ca = 2.5 x 40 / 1
Mass Ca = 100 / 1
= 100 g of Ca
hope this helps!
Answer:
As the frequency increases, the wavelength decreases. ... (a) For a given sound, as the temperature increases, what happens to the frequency? There is no change in frequency. The speed of sound increases by about 0.5 m/s for each degree Celsius when the air temperature rises.
1. The mass of unstable isotope would be left in 2 hours is 50 g
2. The mass of unstable isotope would be left in 4 hours is 25 g
3. The mass of unstable isotope would be left in 10 hours is 3.125 g
<h3>1. How to determine the mass after 2 hours</h3>
We'll begin by calculating the number of half-lives that has elapsed.
- Half-life (t½) = 2 hours
- Time (t) = 2 hours
- Number of half-lives (n) =?
n = t / t½
n = 2 / 2
n = 1
Finally, we shall determine the mass remaining.
- Original amount (N₀) = 100 g
- Number of half-lives (n) = 1
- Amount remaining (N) = ?
N = N₀ / 2ⁿ
N = 100 / 2¹
N = 50 g
<h3>2. How to determine the mass after 4 hours</h3>
We'll begin by calculating the number of half-lives that has elapsed.
- Half-life (t½) = 2 hours
- Time (t) = 4 hours
- Number of half-lives (n) =?
n = t / t½
n = 4 / 2
n = 2
Finally, we shall determine the mass remaining.
- Original amount (N₀) = 100 g
- Number of half-lives (n) = 2
- Amount remaining (N) = ?
N = N₀ / 2ⁿ
N = 100 / 2²
N = 25 g
<h3>3. How to determine the mass after 10 hours</h3>
We'll begin by calculating the number of half-lives that has elapsed.
- Half-life (t½) = 2 hours
- Time (t) = 10 hours
- Number of half-lives (n) =?
n = t / t½
n = 10 / 2
n = 5
Finally, we shall determine the mass remaining.
- Original amount (N₀) = 100 g
- Number of half-lives (n) = 5
- Amount remaining (N) = ?
N = N₀ / 2ⁿ
N = 100 / 2⁵
N = 3.125 g
Learn more about half life:
brainly.com/question/26374513
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