<u>Answer:</u> The final volume of the gas comes out to be 4 L.
<u>Explanation:</u>
To calculate the volume with changing pressure, we use the equation given by Boyle's law.
This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.
Mathematically,
(At constant temperature and number of moles)
The equation given by this law is:
![P_1V_1=P_2V_2](https://tex.z-dn.net/?f=P_1V_1%3DP_2V_2)
where,
are initial pressure and volume.
are final pressure and volume.
We are given:
![P_1=2.0atm\\V_1=3L\\P_2=1.5atm\\V_2=?L](https://tex.z-dn.net/?f=P_1%3D2.0atm%5C%5CV_1%3D3L%5C%5CP_2%3D1.5atm%5C%5CV_2%3D%3FL)
Putting values in above equation, we get:
![2atm\times 3L=1.5atm\times V_2\\\\V_2=4L](https://tex.z-dn.net/?f=2atm%5Ctimes%203L%3D1.5atm%5Ctimes%20V_2%5C%5C%5C%5CV_2%3D4L)
Hence, the final volume of the gas will be 4 L.
Hardening steel and keeping it from rusting
Answer:
<h2>9.42 moles</h2>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
![n = \frac{N}{L} \\](https://tex.z-dn.net/?f=n%20%3D%20%20%5Cfrac%7BN%7D%7BL%7D%20%5C%5C)
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
![n = \frac{5.67 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 9.418604...](https://tex.z-dn.net/?f=n%20%3D%20%20%5Cfrac%7B5.67%20%5Ctimes%20%20%7B10%7D%5E%7B24%7D%20%7D%7B6.02%20%5Ctimes%20%20%7B10%7D%5E%7B23%7D%20%7D%20%20%5C%5C%20%20%3D%209.418604...)
We have the final answer as
<h3>9.42 moles</h3>
Hope this helps you
Answer:
Yellow does not attract hummingbirds.
Explanation:
The most food wasn't taken out of the yellow feeders.