Give FOUR possible reasons why your actual yield is less than the theoretical yield. You canmention mechanical, losses, but if you do you have to be specific about exactly where the mechanicallosses might be, and mechanical losses can only be TWO of your FOUR possible reasons.

8

explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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