Answer:
When two forces acting on an object are of similar size but acting in opposite directions, we say they are forces of balance. If the forces on an object are balanced (or if there are no forces acting on it), this is what happens: the object stays stationary
 
        
             
        
        
        
Answer: 5 
Explanation: you divide the distance by the time and get the speed.
        
             
        
        
        
PH is defined as the negative log of Hydrogen ion concentration. Mathematically we can write this as:
![pH=-log[H^{+}]=-log[H_{3}O]](https://tex.z-dn.net/?f=pH%3D-log%5BH%5E%7B%2B%7D%5D%3D-log%5BH_%7B3%7DO%5D%20%20)
We are given the concentration of 

. Using the value in formula, we get:
Therefore, the pH of the solution will be 3.745
 
        
             
        
        
        
The name of the positively charged nonmetal ion is changed to end in –ide, is not true of binary compounds.
Hope this help!