Assume you inhale in about 6 l of air per minute how much nitrogen do you breathe in one minute

This means he inhale 4.68 L of Nitrogen in 1 minute.

Explanation:

Air constitute 78 percent of nitrogen . That means to get the amount available in 6 L we need to find 78 % of nitrogen in 6 L .

78 % of 6L can be computed as follows:

78/100 × 6 = 468/100 = 4.68  L

This means 4.68 L of Nitrogen is present in 6 L of air.

This means he inhale 4.68 L of Nitrogen in 1 minute.

Since He inhale 6 L of air in 1 minute and 6 L of air contains 4.68 L of Nitrogen that means he inhales 4.68 L of Nitrogen in 1 minute.

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.