b. Evaluate the stability of oxygen-18 and oxigen-16 isotopes based on the ratio of neutron/proton. Justify your answer

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B Evaluate The Stability Of Oxygen 18 And Oxigen 16 Isotopes Based On The Ratio Of Neutron Proton Justify Your Answer 1 (31.69 KiB) Viewed 12 times

b. Evaluate the stability of oxygen-18 and oxigen-16 isotopes based on the ratio of neutron/proton. Justify your answer (The atomic number of O: 8) (3 Marks) c. A mineral contains 350 ug of potassium and 0.05 m³ argon gas at standard temperature and pressure condition, estimate the age of this mineral by using K-Ar dating method. (5 Marks) Formula: X-¹ In[{40 Ar/(0.107 40K)} + 1] Given: t₁/2 K=1.28 x10 yr; abundance of "K= 0.0117% mol-PV/RT Mw K= 39.1 g/mol Mw Ar= 40 g/mol R=0.082 L.atm.mol-¹K-¹ P= 1 atm T= 273K