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➷ Astrology: It hasn't shown any clear effectiveness in studies and doesn't have any scientific validity.
Aromatherapy with essential oils: It is only backed with low quality studies that just demonstrate the placebo effect
Acupuncture: Lots of research suggests it is just the placebo effect so it has no scientific backing
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Answer : The molality of sodium chloride is, 1.79 m
Explanation :
To calculate the molality of solution, we use the equation:
Where,
= Given mass of solute (sodium chloride) = 49 g
= Molar mass of solute (sodium chloride) = 58.5 g/mol
= Mass of solvent (water) = 469 g
Now put all the given values in above equation, we get:
Hence, the molality of sodium chloride is, 1.79 m
I believe the answer is reversible
