Question 3 of 10
In an experiment, a scientist compares the effect of adding
acid rain to samples taken from two different lakes. The
scientist observes that ten drops of acid rain added to water
taken from Lake Minnetonka in southern Minnesota does not
change the pH from 7.5, but ten drops of acid rain added to
water taken from Upper Kintla Lake in Glacier National Park
causes the pH to change from 7.5 to 5.2.
Which conclusion is supported by these observations?
OA. Upper Kintla Lake contains a buffer, but Lake
Minnetonka does not.
O B. Lake Minnetonka contains a buffer, but Upper Kintla
Lake does not.
O c. Both Lake Minnetonka and Upper Kintla Lake contain
a buffer.
OD. Neither Lake Minnetonka nor Upper Kintla Lake
contains a buffer.
SUBMIT