M NaBO3*4H2O=23g+11g+3*16g+4*18g=154 g
45g---x mol
154g---1 mol
x=0,29 mol
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M NaBO3*4H2O=23g+11g+3*16g+4*18g=154 g
45g---x mol
154g---1 mol
x=0,29 mol