Which of the following best explains how subsoil becomes rich in minerals?
minerals from the topsoil leach down into the subsoil.

volcanic activity heats the rock fragments in the subsoil and releases minerals.

groundwater flows through the subsoil and deposits minerals.

the bedrock below the subsoil is broken down into smaller particles.

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.

Displacement is the slope of a velocity vs. time graph a. true b. false

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