pH scale is used to measure the acidity or alkalinity on a scale of 0-14 where 0-6.9 is the acidic region , 7.1-14 is the basic region and 7 is for the neutral substance. We can calculate the concentration of proton from pH.
![pH=-log[H^+]](https://tex.z-dn.net/?f=pH%3D-log%5BH%5E%2B%5D)
where ![[H^+]](https://tex.z-dn.net/?f=%5BH%5E%2B%5D)
is the concentration of proton
As per the question ,the pH of coffee is 5.6 and we need to find the concentration of proton so putting the values in the above equation, we get
![5.6=-log[H^+]](https://tex.z-dn.net/?f=5.6%3D-log%5BH%5E%2B%5D)
![-5.6=log[H^+]](https://tex.z-dn.net/?f=-5.6%3Dlog%5BH%5E%2B%5D)
![antilog(-5.6)= [H^+]](https://tex.z-dn.net/?f=antilog%28-5.6%29%3D%20%5BH%5E%2B%5D)
![[H^+]= 2.511\times10^-^6 M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D%202.511%5Ctimes10%5E-%5E6%20M)
1.) ionic bond
2.)ions
3.) the number of protons stay the same. (Wasn’t sure what it was asking. )
4.)an atom is neutral because it has the same amount of protons and neutrons
5.)because ions either have more positive protons or more negative electrons making the ion either positive or negative
Answer:
B
Explanation:
When work is done, energy is transferred between systems, or transformed from one type of energy into another type. Energy shares the same units of measure as work.
