Answer:
0.657 grams of Sodium chloride.
Explanation:
Isotonic saline or normal saline contains 9 grams per litre of sodium chloride.
For 73 mL of isotonic saline :
1000 mL of isotonic solution contain 9 grams of NaCl
1 mL of isotonic solution contain [tex]\frac{9}{1000} \\\\[/tex] grams of NaCl
73.0 mL of isotonic solution contain [tex]\frac{9*73}{1000}[/tex] = 0.657 grams of NaCl
