12.Calculate the number of molecules of crystalline oxalic acid (H2C2O4 .2H2O) in 100 mL of 0.2M oxalic acid
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N = w/GEW * 1000/V_ml
w = N * V_ml * GEW / 1000
w = 0.2 * 100 * 63/1000
w = 1.26g
Number of molecules = (1.26/126) * 6.022 * 10^23 = 6.022 * 10^21
w = N * V_ml * GEW / 1000
w = 0.2 * 100 * 63/1000
w = 1.26g
Number of molecules = (1.26/126) * 6.022 * 10^23 = 6.022 * 10^21
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