Answer:
there are approximately 0.189 moles of HCl in 6.89g.
Explanation:
Molar mass of HCl=1.008 g/mol+35.453 g/mol
Molar mass of HCl≈36.461 g/mol
moles=mass/molar mass
moles=6.89 g/36.461g/mol=0.189moles
