If i'm trying to figure out the number of mols in a sample of 25 g of copper chloride, how would i do it? would i divide 25 g by the molecular weight of copper chloride, which would come out to about 0.19 mols of copper chloride in a 25 g sample? and, during this lab, we react the copper chloride with zinc, which produced solid copper and zncl. how do i find the number of mols of chlorine released by the copper?

Divide 25g by the molar mass of copper chloride and then multiply that answer by Avogadro’s number (6.022*10^23)

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

: )

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.