Supervisor: "you should average 360 seconds per transaction." employee: "if i work 20 6-hour shifts this month and i meet that goal, i will make a total of transactions."

1,200 transaction

Explanation:

First, I must find how many seconds I am working if I work 20 days, 6 hours every day:

20 days * 6 hours =  120 hours.

120 hours * 60 min =  7200 min

7200 min * 60 sec = 432,000 sec

So, I will be working 432,000 seconds on a 6-hour workday, for 20 days.

Next, I must divide the seconds I will work among those that take to make a transaction.

432,000/360=1,200 transaction

If i get the goal.

The question is incomplete, here is the complete question:

Calculate the pH of a solution prepared by dissolving 0.370 mol of formic acid (HCO₂H) and 0.230 mol of sodium formate (NaCO₂H) in water sufficient to yield 1.00 L of solution. The Ka of formic acid is 1.77 × 10⁻⁴

a) 2.099

b) 10.463

c) 3.546

d) 2.307

e) 3.952

The pH of the solution is 3.546

Explanation:

We are given:

Moles of formic acid = 0.370 moles

Moles of sodium formate = 0.230 moles

Volume of solution = 1 L

To calculate the molarity of solution, we use the equation:

To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:  

= negative logarithm of acid dissociation constant of formic acid = 3.75

pH = ?  

Putting values in above equation, we get:  

Hence, the pH of the solution is 3.546