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__(1)___ is/are an important fuel source during low to moderate intensity, long-duration activities; whereas ___(2)___ is an important fuel source during high intensity, short-duration activites

The final day of the Fall 2025 semester is December 12, 2025

Northshore Technical Community College’s is part of the Louisiana Community and Technical Colleges System (LCTCS).

Sort the phyllosilicate minerals in order of weathering in a typical idealized weathering sequence (1=least weathered)

If you haven’t done so already, please fill out  this survey (open in NEW TAB) on what Environmental Applications you want to learn most about in Module 7.

About how long did you spend working on Module 4 (including watching videos)?

Which factor influences organic matter decomposition the most: chemical composition or protection? Why? Give 2 examples of how the factor or process that you chose works.

Sort the molecules according to their longevity in soil (1 = shortest lasting; 4 = longest lasting). Assume all other factors are equal.

Over the course of soil development from parent rock to highly weathered soils, mineral weathering reactions occur that alter the surface chemistry of the soil.  Consider the weathering transformation sequence: muscovite/biotite → illite → vermiculite → smectite → kaolinite → gibbsite During the above weathering sequence, what general changes would be expected in following mineral chemical characteristics? Why? (a)  Permanent (structural) charge (b)  pH dependent (variable) charge (c)  Types of surface functional groups (d)  Cation exchange capacity (e)  Anion exchange capacity

A water sample is found to contain Cu but no organic or inorganic ligands except OH-. Assume that only one hydrolysis species contributes significantly to the total Cu in solution.          K        log Kf Cu2++H2O⇌Cu(OH)++H+{“version”:”1.1″,”math”:”Cu2++H2O⇌Cu(OH)++H+”} 10-7.52 -7.52    If [Cutotal] = 10-{T} M and pH = {pH}, what is the concentration of free Cu2+ in the water sample?  Format answer in scientific notation and round to 3 significant figures. Place the order of magnitude (x10^y) in the “units” box with no spaces (D2L doesn’t have a separate spot for this), followed by the units. For example: x10^-4 mol/L.