Question 616946
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Hi, 
If I am understanding correctly:
2.03 oz originally,  (1 oz=28.35g) 
 I. {{{28.35g *2.03oz = 57.55gm }}} originally
II. {{{ 10min * (60sec/1min) * (0.00235g/1 sec)}}} = 1.41gm Grams dissolved
III. 57.55 - 1.41 = 56.14gms left after 10 min
What is the volume of the key by then? 
 V = mass/density
 {{{56.14g/6.347(g/cm^3) = 8.845cm^3 }}}