Copper(ii) sulfate pentahydrate, cuso4 ·5 h2o, (molar mass 250 g/mol) can be dehydrated by repeated heating in a crucible. which value is closest to the percentage mass of water lost from the total mass of salt in the crucible when the crucible undergoes repetitive heatings until a constant mass is reached? 25%13%36%26%

The percentage mass of water lost from the total mass of salt is 36%.

Explanation:

Molar mass of copper sulfate pentahydrate ,

Number of water crystallization = 5

Molar mass of water = 18 g/mol

Percentage of mass water =  The percentage mass of water lost from the total mass of salt

Percentage of mass water:

The percentage mass of water lost from the total mass of salt is 36%.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;