Here, 39 0% sodium by mass represents that 39 3 Na is present in100 g of Nacl. So, convert 750. mg to g as follows: 0.001 g 1mg 750. mg Nax :0.75gNa Thus, calculate the mass of Nacl using the following conversi ons: 100 g Nacl 39.0 3 Na Therefore, the mass of Nacl is 1.92 g. 0.75gNax :1.9ZgNaCl
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