Calculate the mean nitrate concentration found at site B - Edexcel - GCSE Biology - Question 5 - 2014 - Paper 1
Question 5
Calculate the mean nitrate concentration found at site B.
A scientist recorded the nitrate concentrations of the water at Site B as follows:
- Sample 1: 49 mg per ... show full transcript
Worked Solution & Example Answer:Calculate the mean nitrate concentration found at site B - Edexcel - GCSE Biology - Question 5 - 2014 - Paper 1
Step 1
Calculate the total nitrate concentration at site B
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Answer
Total concentration = 49 + 64 + 58 = 171 mg per dm³
Step 2
Calculate the mean nitrate concentration at site B
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Answer
Mean concentration = \frac{171}{3} = 57 \text{ mg per dm}^3
