Draw the correct structure(s) for (2r,3s)-2,3-dibromobutane. show stereochemistry clearly. to ensure proper grading, explicitly draw all four groups, including wedge/dash bonds, around a chirality center. indicate whether the compound(s) could exist in an optically active form.

In salt water solution,the salt is the blank

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)

Spaghetti sauce can be high in sodium. what is a good guideline for mg of sodium per half cup serving? a. less than 1 mg b. less than 800 mg c. less than 700 mg d. less than 400 mg