What is the mass of one electron in grams if an electron has the charge of
-1.6022 x 10-19C and lg = -1.76 x 108 C.

The mass of one electron : 9.103 x 10⁻²⁸ g
Electrons are a part of the atomic nucleus particles (including protons and neutrons), and are negatively charged (-1)
An electron has the charge of -1.6022 x 10⁻¹⁹C
1 g = -1.76 x 10⁸ C
so the mass of one electron :
[tex]\tt \dfrac{1.6022\times 10^{-19}}{1.76\times 10^8}=9.103\times 10^{-28}~g[/tex]