38-year-old female patient, previously healthy. She has been sick for 40 days and her doctor recommends a medicine that

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38-year-old female patient, previously healthy. She has been
sick for 40 days and her doctor recommends a medicine that retains
salt. During the last month she has retained 9 grams of sodium
chloride. This salt causing a secondary water retention by osmosis,
the liquid retention was isotonic.
1. How much fluid has this patient retained during the
month? How much has the patient's body weight
increased?
show all the numerical processing to obtain the result.