Determine the precision and accuracy of these data for warfarin. Sample 1 Sample 2 Sample 3 Known concentration: 23.2 ng/mL 65.9 239 ng/mLExperimentally determined values: 34.5 60.3 251ng/mL 19.6 (ng/mL) 46.5 231 24.9 59.1 209 21.7 78.4 255 21.6 58.0 201 25.8 61.1 227

Lewis structure and molecular geometry for nh2cl

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.