Answer: False
Explanation: Solutions can never be Heterogenous
Answer : The number of grams of solute in 500.0 mL of 0.189 M KOH is, 5.292 grams
Solution : Given,
Volume of solution = 500 ml
Molarity of KOH solution = 0.189 M
Molar mass of KOH = 56 g/mole
Formula used :
![Molarity=\frac{\text{Mass of KOH}\times 1000}{\text{Molar mass of KOH}\times \text{Volume of solution in ml}}](https://tex.z-dn.net/?f=Molarity%3D%5Cfrac%7B%5Ctext%7BMass%20of%20KOH%7D%5Ctimes%201000%7D%7B%5Ctext%7BMolar%20mass%20of%20KOH%7D%5Ctimes%20%5Ctext%7BVolume%20of%20solution%20in%20ml%7D%7D)
Now put all the given values in this formula, we get the mass of solute KOH.
![0.189M=\frac{\text{Mass of KOH}\times 1000}{(56g/mole)\times (500ml)}](https://tex.z-dn.net/?f=0.189M%3D%5Cfrac%7B%5Ctext%7BMass%20of%20KOH%7D%5Ctimes%201000%7D%7B%2856g%2Fmole%29%5Ctimes%20%28500ml%29%7D)
![\text{Mass of KOH}=5.292g](https://tex.z-dn.net/?f=%5Ctext%7BMass%20of%20KOH%7D%3D5.292g)
Therefore, the number of grams of solute in 500.0 mL of 0.189 M KOH is, 5.292 grams
Answer:
C. pH values are different because the
solution partially ionizes and the HCl solution ionizes 100 percent.
Explanation:
Strong acids are the acids which completely ionizes in the solution while weak acids are the acids which ionizes partially in the solution. They exists in equilibrium in the solution with their respective ions.
Thus, strong acids furnish greater concentration of protons as compared to weak acid when same concentration of both types are taken.
<u>Also, pH is the negative of the logarithm of the hydrogen ions. Thus, hydrogen ion concentration for both acids are different and thus pH will be different.</u>
Answer:
Limestone is easily eroded from above and below.
Explanation:
The Florida bedrock is largely made of limestone. Because limestone is a rock that is easily eroded, the landscape of a great part of Florida is classified as karstic.
Karstic landscapes are dotted by sinkholes, underground rivers, caves, and springs. The more acidic the groundwater or rainwater, the faster and more easily the limestone will succumb to erosion.
In this way, underground rivers, streams, runoff, rain, and underground water pooled in caves have all carved out gaps and caverns in the weak limestone bedrock.