The knowledge of plate tectonics help people living in areas prone to earthquakes and volcanic eruptions can help by knowing the chances of the earthquake or volcanic eruption
Pure water has a freezing point of 0 degrees centigrade but seawater has a lower freezing point because of the salt (NaCl)
Answer:
The answer is 1385 x10∧ -3
Explanation:
Scientific notation is a quick way to represent a number using notation in exponential form or powers of base ten.
This notation allows us to express too large or small numbers easily.
<u>For example:
</u>
500 is written as 5x10∧2; Where the power 2 represents the number of 0's that follow 5.
0.0093 is written as 9.3x10∧-3; Where the power -3 represents the number of times the comma was moved to the right.
Question:
At standard temperature and pressure, the volume of a tire is 3.5L. What is the new pressure if the temperature outside is 296k and its weight causes the volume of the gas is 2.0 L?
Answer:
The new pressure is: 1.896 atm
Explanation:
At standard temperature and pressure, we have:
![P_1 = 1atm](https://tex.z-dn.net/?f=P_1%20%3D%201atm)
![T_1 = 273.15k](https://tex.z-dn.net/?f=T_1%20%3D%20273.15k)
![V_1 = 3.5L](https://tex.z-dn.net/?f=V_1%20%3D%203.5L)
Outside, we have:
![T_2 = 296k](https://tex.z-dn.net/?f=T_2%20%3D%20296k)
![V_2 = 2.0L](https://tex.z-dn.net/?f=V_2%20%3D%202.0L)
Required
Determine the new pressure
Using combined gas law, we have:
![\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}](https://tex.z-dn.net/?f=%5Cfrac%7BP_1V_1%7D%7BT_1%7D%20%3D%5Cfrac%7BP_2V_2%7D%7BT_2%7D)
This gives:
![\frac{1 * 3.5}{273.15} =\frac{P_2*2.0}{296}](https://tex.z-dn.net/?f=%5Cfrac%7B1%20%2A%203.5%7D%7B273.15%7D%20%3D%5Cfrac%7BP_2%2A2.0%7D%7B296%7D)
Solve for ![P_2](https://tex.z-dn.net/?f=P_2)
![P_2 = \frac{296 * 1 * 3.5}{273.15*2.0}](https://tex.z-dn.net/?f=P_2%20%3D%20%5Cfrac%7B296%20%2A%201%20%2A%203.5%7D%7B273.15%2A2.0%7D)
![P_2 = \frac{1036}{546.30}](https://tex.z-dn.net/?f=P_2%20%3D%20%5Cfrac%7B1036%7D%7B546.30%7D)
![P_2 \approx 1.896 atm](https://tex.z-dn.net/?f=P_2%20%5Capprox%201.896%20atm)
JJ Thomson proved John Dalton's theory wrong, as Thomson discovered the electron. This showed that there were particles that were smaller than an atom, despite Dalton claiming that the atom is the smallest unit of matter.