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65. | (i) Write the equation for the reaction in the Haber process that forms ammonia. | | | | |
66. | (ii) State the purpose of liquefying the ammonia produced in the process. | | | | |
67. | (iii) Predict the group of an element X if its atomic number is 16. | | | | |
68. | (iv) State one reason why tap water is not used to prepare a solution of silver nitrate in the laboratory. | | | | |
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