NECO CHEMISTRY QUESTION. 1a) Define the following terms [i] - TopicsExpress

NECO CHEMISTRY QUESTION. 1a) Define the following terms [i] Atomicity [ii] mass number [iii] isotopy 1bi) Describe the Laboratory preparation of Hydrogen gas ny the action of dilute acid on zinc 1bii) Name 3 uses of hydrogen 1c) Calculate the percentage by mass of oxygen in trioxonitrate(v)acid [ H=1, N=14, O=16 ] 1d) Name two metals that can be extracted by electrolysis {1e} Give two uses of salt 2a) Mention the main ore of tin 2aii) Write an equation of reaction involved in the melting of purified tin ore 2aiii) Give two example of natural occurring acid 2bi) Mention two uses of alluminium 2bii) State 3 ways by which the reaction of magnesium ribbon with dilute hydrochloric acid can proceed faster at room temperature 2biii) Write an equation for the reaction in (2bii) 2ci) State the method used in collecting gases that are denser than air 2cii) Name two gases that can be used to perform the fountain experiment in laboratory - by muhd anass 2go username manas168 whatsapp 07060643441

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