A semi-permeable membranous sac contains a 4% NaCl, 96% water solution. This sac is placed into a beaker containing a 16% NaCl, 84% water solution. The membrane is permeable to NaCl. Which way will NaCl flow across the membrane (into or out of the sac)?

Should be going out of the sac because the molecules has to balance the concentration not sure tho

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides