Answer:
ecosystem
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The hydrogen ion concentration, [H ], in the solution of phenol red solution of pH 11.20 is 6.3 X 
moles/litre.
Explanation:
Data given:
basic solution of phenol red is given as it has pH of 11.2
hydrogen ion concentration = ?
the hydrogen ion concentration is calculated by using the following formula:
pH = -
[
]
Rearranging the equation:
[] = 
Putting the values in the above equation:
[] = 
[] = 6.3 X moles/litre
The hydrogen ion concentration is very small and the solution of phenol red is basic in nature. The pH of 11.2 also indicates that solution is basic and teh color of the solution is bright pink.
Something travelling at one foot per second is traveling about 0.682 miles per hour, so it should be roughly 60mph
During exercise , his body responds by an increase in the heart rate and his
respiratory rate.
<h3>What is Exercise?</h3>
Exercise refers to the activities which are done to improve the physical
fitness of an individual. Examples include:
The heart and respiratory rate are increased to ensure enough oxygen is
available to the cells of the body. This helps to ensure carbohydrate is
broken down to energy which is used by the body cells during the exercise
being performed.
Read more about Exercise here brainly.com/question/1365564
