What are <span>stoichiometry equations?</span>
I believe that is condensation
The acceleration of the ball was 0.6 m·s⁻².
<em>F = ma</em>
<em>a = F</em>/<em>m</em> = 5 N/9 kg × (1 kg·m·s⁻²/1 N) = 0.6 m·s⁻²
Through manipulation of equations, we are able to obtain the equation:
![-pOH= log [ OH^{-}]](https://tex.z-dn.net/?f=-pOH%3D%20log%20%5B%20OH%5E%7B-%7D%5D%20)
Then we can transform the equation into:
![[ OH^{-}]= 10^{-pOH}](https://tex.z-dn.net/?f=%5B%20OH%5E%7B-%7D%5D%3D%2010%5E%7B-pOH%7D%20%20)
Then we are able to plug in the pOH and directly get [OH-]:
![[ OH^{-}] = 10^{-6.48}](https://tex.z-dn.net/?f=%5B%20OH%5E%7B-%7D%5D%20%3D%2010%5E%7B-6.48%7D%20)
Janelle is observing Physical properties.
Why?
The properties of matter can be classified as follows:
- Extensive and Intensive: <em>Extensive</em> properties <u>depend on the amount of matter</u> involved in the measuring (e.g. mass), and <em>intensive</em> properties<u> do not depend on the amount of matter </u>(e.g. density, conductivity).
- Physical and Chemical: <em>Physical </em>properties <u>do not involve a change in the nature of the substance that is being measured</u> (e.g. color, length), while <em>Chemical</em> properties <u>involve a change in the nature of the substance when they are measured</u> (e.g. reactivity).
The properties that Janelle observed are: Color (intensive, physical), mass (extensive, physical), heat conductivity (intensive, physical), and electrical conductivity (intensive, physical). All these properties are Physical properties.
Have a nice day!