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40 gms of NaOH react with 36.5 gms of HCl.
? Gms of NaOH react with 7.3 gms of HCl.let it be x.
=>36.5x=40*7.3   (By cross multiplication)
 therefore, '4 gms' of NaCl react with 7.3 gms of HCl.

4 4 4
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