Answer: Mass of 1 mol of gold (Au) is 197g , of aluminum chloride[tex] (AlCl_3)[/tex] is 133.5 g and of glucose [tex](C_6H_{12}O_6)[/tex] is 180 g
Explanation: Mass of 1 mole of a substance is called its molar mass.
a) 1 mole of [tex]Au[/tex] contains [tex]6.023\times 10^{23}atoms[/tex] and weigh 197g.
b) 1 mole of [tex]AlCl_3[/tex] will weigh=[tex]1\times {\text {mass of 1 mole of Aluminium}}+3\times {\text {mass of 1 mole of chlorine atom}}[/tex]
Thus mass of 1 mole of [tex]AlCl_3[/tex] will be [tex]=1moles\times {27g/mol}+3moles\times {35.5g/mol}=133.5g[/tex]
c) 1 mole of [tex]C_6H_{12}O_6[/tex] will weigh=[tex]6\times {\text {mass of 1 mole of carbon}}+12\times {\text {mass of 1 mole of hydrogen atom}}+6\times {\text {mass of 1 mole of oxygen}}[/tex]
1 mole of [tex]C_6H_{12}O_6[/tex] will weigh=[tex]6\times 12g/mol+12\times 1g/mol+6\times 16g/mol=180g[/tex]
