The mass of 4.5 moles of sodium fluoride is 189g
The answer is c. the others are compounds.
Answer:
<h2>7.6</h2>
Explanation:
The pH of a solution can be found by using the formula
![pH = - log [ {H}^{+} ]](https://tex.z-dn.net/?f=pH%20%3D%20-%20log%20%5B%20%7BH%7D%5E%7B%2B%7D%20%5D)
From the question we have

We have the final answer as
7.6
Hope this helps you
Answer:
I'm pretty sure the answer is D, I could be wrong tho