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Help on Probability please!? Entropy and Enthropy problem? What is the mass of carbon in a 5-carat diamond that contains 5.00 x 10^22 atoms of carbon? How do I prove that t is twice the area of the shaded region? When 60.0 mL of water is added to 30.0 mL of 2.0 M NaCl (aq), what is the resulting molarity of NaCl in solution?