To determine how many milliliters (mL) are in 2 decaliters (daL), we need to convert the units step by step.
1. Understanding the conversions:
- 1 decaliter (1 daL) is equivalent to 10 liters (L).
- 1 liter (1 L) is equivalent to [tex]\(10^3\)[/tex] milliliters (mL).
2. Step-by-step calculation:
- First, convert decaliters to liters:
[tex]\[
2 \text{ daL} = 2 \times 10 \text{ L} = 20 \text{ L}
\][/tex]
- Next, convert liters to milliliters:
[tex]\[
20 \text{ L} = 20 \times 10^3 \text{ mL} = 20000 \text{ mL}
\][/tex]
Thus, the correct answer is:
[tex]\[
2 \text{ daL} = 20000 \text{ mL}
\][/tex]
So, among the given options, the correct choice is:
[tex]\[
\boxed{2 \times 10^4 \text{ mL}}
\][/tex]
