Calculate the residence time of sodium

Use T=(M)/(f)
Mass m (Tons) Sodium:2.8*10^(13)
Flow rate, F (Tons, Year) Sodium:3.5*10^(5)
Zach is investigating the residence time of sodium in sea water. According to Zach's data table, the residence time of sodium written in scientific notaton is 8*10^

To calculate the residence time of sodium, we can use the formula T = M/F, where T is the residence time in years, M is the mass of sodium in tons, and F is the flow rate of sodium in tons per year.

Given:
Mass m (Tons) Sodium: 2.8 * 10^13
Flow rate, F (Tons, Year) Sodium: 3.5 * 10^5

Using the formula T = M/F, we have:

T = (2.8 * 10^13) / (3.5 * 10^5)

Now, we can simplify the expression by dividing the numbers and subtracting the exponents:

T = 8 * 10^(13-5)
T = 8 * 10^8

Therefore, the residence time of sodium in sea water, according to Zach's data table, is 8 * 10^8 years.