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Question
Biology
Posted 3 months ago

If we have 10ml10 \mathrm{ml} of lake water and 14 colonies on it how much colonies we got per 100ml100 \mathrm{ml} in membrane filteration
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Answer from Sia
Posted 3 months ago
Answer
To calculate the number of colonies per 100 ml, we would have 140 colonies per 100 ml.
Solution
a
Determine the ratio of colonies to volume in the original sample: Given that there are 14 colonies in 10 ml of lake water, we calculate the number of colonies per ml
b
Scale up to 100 ml: Since we want to know the number of colonies in 100 ml, we multiply the number of colonies per ml by 100
Key Concept
Proportional scaling
Explanation
To find the number of colonies per 100 ml, we scale up the number of colonies found in 10 ml by a factor of 10, because 100 ml is 10 times greater than 10 ml.

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