5. Brown trout have disappeared from a popular fishing pond in the Sierra Nevada Mountains. Use the graphs below to answer the questions that follow.
Pond Water Temperature, 1986-2002
Brown Trout Population, 1986-2002
50
Vus
40
35
Average waterter
perature
30
25
20
86 87
97 98 99/00 01 02
Year
Year
Part A: Make a conclusion about the relationship between temperature and
the brown trout population. Cite one piece of evidence from the graphs to
support your claim.

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a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o