Solutions based on viscous or volatile solvents (except alcohol solutions) should be prepared: 1 point
1-by the mass-volumetric method
2-by the mass method
3-by the volumetric method
4-in a dry beaker (glass)

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.

answerlinnaeus;