A 0.0% NaCl solution is a solution with absolutely no NaCl.
molarity of 5% NaCl solution would be 1.25M.
Yes, this is true.
If you think to an isotonic solution the concentration is 0,9 g NaCl/100 g solution.
The answer is 8 g NaCl.
The answer is 0,0001 %.
The concentration of NaCl is 15,73 mg/100 mL.
9%
Pure solide NaCl is not electrically conductive. The water solution of NaCl is an electrolyte and is conductive.
This concentration of NaCl is 2,6 g NaCl/100 mL solution.
This is a hypertonic solution.
Gram percent is the number of grams of a solute per 100 grams of a solution. For example, if a solution of NaCl and water was said to have a 0.02g% of NaCl, this would mean that for 100g of saline solution, 0.02 of those grams are salt. Since 1L of water weighs 1kg (at normal conditions), there would be .2g of NaCl in 1L of a 0.02g% NaCl solution.
If your solution is a total of 414g and 3.06% of it needs to be NaCl, then you just take 414 x .0306 = grams of NaCl. The rest of the grams will be from other species in the solution.