Which tool is most suitable for a chemist to measure the mass of a liquid

Chemists use beakers, flasks, burets and pipets to measure the volume of liquids. Plz mark as brainliest

The most suitable tool is using a graduated cylinder and a calibrated balance.

Explanation:

To measure the mass of a liquid, first you have to define an specific volume of liquid to measure (example 200 milliliters), then using a graduated cylinder you measure this quantity and put it all on the balance. You read the mass value (example 285 grams). To finish you have to measure the mass of the graduated cylinder empty (example 100 grams) and then subtract it to the weight of the liquid with the calibrated cylinder (example 285 g - 100 g = 185 g).

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

i do not get it   at all