Question

An environmental scientist obtains a sample of water from an irrigation canal that contains a certain type of bacteria at a concentration of 8 per milliliter. Fine the mean number of bacteria in a 5 milliliter sample

Answer 1

To calculate the mean number of bacteria in a 5 ml water sample with a concentration of 8 bacteria per milliliter, you multiply 8 by 5, which equals 40 bacteria.

Step-by-step explanation:

To find the mean number of bacteria in a 5 milliliter sample when the concentration is 8 bacteria per milliliter, we simply multiply the concentration by the volume of the sample.

• Concentration of bacteria = 8 bacteria/ml
• Volume of the sample = 5 ml

Mean number of bacteria = Concentration × Volume

Mean number of bacteria = 8 bacteria/ml × 5 ml = 40 bacteria

This calculation assumes a homogenous distribution of bacteria in the water and that the concentration remains consistent across the entire sample.