18. A pH of 7.0 is neutral; anything below 7 is acidic, while anything above 7 is alkaline. Pure water has a pHof 7, while uncontaminated rainwater (and thus lake water) typically has a pH around 5.7 because carbondioxide in the air naturally forms carbonic acid, a weak acid. Given this information and the datapresented above, for a lake of which pH is a best-fit curve to the data LEAST likely to accurately predictthe lake's fish population?A) 4.0B) 5.0C) 5.7D) 7.5 Fish Counts / AcreAcid Rain and Aquatic Life12510075-50254.0 4.55.0 5.56.06.5pH of Lake WaterThe scatterplot above shows fish counts per acre in a number of lakes in Eastern Canada, where acid rain hasbeen a known problem for several decades. The pH (a measure of acidity) of the water in each lake was alsomeasured.

It is an important part of statistics. It is widely used.

Answered: 18. A pH of 7. of 7, while dioxide in…

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18. A pH of 7. of 7, while dioxide in presented the lake's A) 4.0 B) 5.0 C) 5.7 D) 7.5

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter1: Variables, Expressions, And Integers

Section1.5: Adding Integers

Problem 45E

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.

Question

18. A pH of 7.0 is neutral; anything below 7 is acidic, while anything above 7 is alkaline. Pure water has a pH
of 7, while uncontaminated rainwater (and thus lake water) typically has a pH around 5.7 because carbon
dioxide in the air naturally forms carbonic acid, a weak acid. Given this information and the data
presented above, for a lake of which pH is a best-fit curve to the data LEAST likely to accurately predict
the lake's fish population?
A) 4.0
B) 5.0
C) 5.7
D) 7.5

Fish Counts / Acre
Acid Rain and Aquatic Life
125
100
75-
50
25
4.0 4.5
5.0 5.5
6.0
6.5
pH of Lake Water
The scatterplot above shows fish counts per acre in a number of lakes in Eastern Canada, where acid rain has
been a known problem for several decades. The pH (a measure of acidity) of the water in each lake was also
measured.

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