Answer the following questions concerning a 7.05 g sample of . Answer to 3 significant figures. An answer such as 4.53 x  may be input as 4.53e24. You may find the following video helpful: mass-moles-molecules-atoms

________ moles of molecules

________ molecules

________ moles of atoms

________ atoms

I need some help on this question. I know that three arecorrect. I think that options two and three are correct, but Icannot find the third. Please help.

I need some help on this question. I know that three arecorrect. I think that options two and three are correct, but Icannot find the third. Please help.

Need some help on this problem. Please show the work for it. Thank You!!

Given 5.0 g of sodium Acetate (anhydrous) (MW = 82.03 g/mol), how much 1.0 M HCl must be added to create a buffer of pH = 5. pKa of acetic acid = 4.86