Posted by Anonymous on Wednesday, May 4, 2011 at 6:41pm.
3.2%C
100-3.2 = 96.8%X
Convert to moles.
3.2/12 = about 0.266
96.8/X = must be about 2*0.266 for the formula to be X2C. If 96.8/X = 0.532, then X is 96.8/0.532 = about 182. Look on the periodic table and see what hard metal has an atomic mass of about 182 that combines to form C to form X2C and that is placed on cutting edges of tools.
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