How many electrons are there in on coulomb of negative charge?

Explanation

To find out how many electrons are there in one coulomb of negative charge, we can follow these steps:

### Step 1: Identify the charge of one electron
The charge of one electron is approximately:
\[ e = -1.6 \times 10^{-19} \text{ coulombs} \]

### Step 2: Set up the equation for total charge
We know that the total charge \( Q \) can be expressed as the product of the number of electrons \( n \) and the charge of one electron \( e \):
\[ Q = n \times e \]
For our case, we want to find out how many electrons correspond to a total charge of \( Q = -1 \text{ coulomb} \).

### Step 3: Rearrange the equation to solve for the number of electrons
Rearranging the equation gives us:
\[ n = \frac{Q}{e} \]
Substituting the values we have:
\[ n = \frac{-1 \text{ coulomb}}{-1.6 \times 10^{-19} \text{ coulombs}} \]

### Step 4: Calculate the number of electrons
Now we can perform the calculation:
\[ n = \frac{1}{1.6 \times 10^{-19}} \approx 6.25 \times 10^{18} \]

### Step 5: Conclusion
Thus, the number of electrons in one coulomb of negative charge is approximately:
\[ n \approx 6.25 \times 10^{18} \text{ electrons} \]