Thủy phân este X trong môi trường kiềm, thu được natri axetat và ancol etylic. Công thức của X là

c is the answer because when something is left after something evaporates that shows the chemical change.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

i believe the answer is 5,000