1. a) Explain (i.e dictionary definitions alone will not be sufficient) what you understand by the terms. Make sure you include examples i) i) Atomic number. Atomic mass number Relative atomic mass. If the mineral pyrite, FeSz is heated strongly in air, Iron (III) oxide and sulphur dioxide are produced. The generic equation for the reaction is FeSz + O2 > Fe:Os + SO2 b) What is the full balanced equation for this reaction? (Please make sure that you explain each stage of your balancing fully including an equation). The final answer will not be sufficient to obtain full marks. c) Which of the following substances (all used as nitrogen fertilisers) contains the greatest percentage by mass of nitrogen? What is that percentage? ) Urea, CO(NH:): i) Potassium nitrate, KNO: in) Ammonium nitrate, NHANO: iv) Ammonium sulphate, (NH+):SO. (RAM data H = 101, C = 12.01, N = 14.01, K = 39 10, O = 16.00, S= 32.07) d) A compound contained 4.6g Na, 2.8g N. 9 6g O Find the empirical formula (RAM data Na = 22 99 N = 14.01. O= 16 00)

1. a) Explain (i.e dictionary definitions alone will not be sufficient) what you understand by the terms. Make sure you include examples i) i) Atomic number. Atomic mass number Relative atomic mass. If the mineral pyrite, FeSz is heated strongly in air, Iron (III) oxide and sulphur dioxide are produced. The generic equation for the reaction is FeSz + O2 > Fe:Os + SO2 b) What is the full balanced equation for this reaction? (Please make sure that you explain each stage of your balancing fully including an equation). The final answer will not be sufficient to obtain full marks. c) Which of the following substances (all used as nitrogen fertilisers) contains the greatest percentage by mass of nitrogen? What is that percentage? ) Urea, CO(NH:): i) Potassium nitrate, KNO: in) Ammonium nitrate, NHANO: iv) Ammonium sulphate, (NH+):SO. (RAM data H = 101, C = 12.01, N = 14.01, K = 39 10, O = 16.00, S= 32.07) d) A compound contained 4.6g Na, 2.8g N. 9 6g O Find the empirical formula (RAM data Na = 22 99 N = 14.01. O= 16 00)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter3: Chemical Reactions

Section: Chapter Questions

Problem 108QRT

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