To find out how many gallons of perfume will be in each container, you need to divide the total amount of perfume by the number of containers:
Given:
- Total amount of perfume = 10.5 gallons
- Number of containers = \(3.5 \times 10^2 = 350\) containers
Now, perform the division:
\[ \text{Gallons per container} = \frac{10.5 \text{ gallons}}{350 \text{ containers}} \]
Calculating this:
\[ \text{Gallons per container} = \frac{10.5}{350} = 0.03 \text{ gallons} \]
Next, convert \(0.03\) gallons to scientific notation.
\[ 0.03 = 3 \times 10^{-2} \]
Thus, the answer in scientific notation is:
\[ \boxed{3 \times 10^{-2}} \]