The mass (g) of NaCl that is present in a liter of blood is 0.347g.
HOW TO CALCULATE MASS:
The mass of a substance can be calculated by multiplying the decimal mass-volume of the substance by its molar mass.
According to this question, Blood has a mass-volume percent of NaCl of 0.9%. This means that 0.9/100 = 0.009g of NaCl is present in each 100g of blood.
Molar mass of NaCl = 23 + 35.5 = 38.5g/mol
Mass of NaCl in a liter of blood = 38.5 × 0.009
Mass of NaCl in a liter of blood = 0.347g of NaCl.
Therefore, The mass (g) of NaCl that is present in a liter of blood is 0.347g.
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