Question

help with 23 and 25

2.68mol 10331 32 bom 23) How many grams of H3PO, are needed to make 175 ml of a 0.175 M H.PO, solution? A) 0.786 g B) 0.312 g C) 5.02 g D) 3.00 g 576 mol x20229 56.105@gimola E) 0.987 g 24) What mass of KOH is needed to produce 22.0 mL of 0.576 M solution? A) 0.423 g B) 1.39 g C) 0.0126 g D) 0.711 g 71096 E) 2.64 g 25) Calculate the volume (in L) of a solution that contains 3.12 moles of NaCl if the concentration solution is 6.67 M NaCl. A) 2.14 L B) 20.8 L C) 46.8 L D) 0.468 L CAT

Answer 1

Moley of H₂ poy Molarily x volume of solution in 0.175 mx 0.1752 = 0.030625 mol nolu x molas men -(0.030625 )x (98 g/mol) 3.00 g