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Cambridge International AS & A Level
2(f) fertiliser 1 Question Answer Marks 3(a) hydrolysis 1 3(b) M1 both have molecular formula - C6H12O6 M2 idea that in glucose and fructose there are the same number and type of atoms present but the atoms are arranged in a different order ie one has a carbonyl group at the end of the chain/molecule and the other has a carbonyl group in the
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Cambridge International AS & A Level
gceguide.com4 UCS 2021 970122M21 2 The strength of interaction between particles determines whether the substance is a solid, liquid or gas at room temperature. (a) Lithium sulfide, Li 2 S, is a crystalline solid with a melting point of 938°C. It conducts electricity when it is molten. (i) Give the formulae of the particles present in solid lithium sulfide. [1]
Cambridge International AS & A Level
gceguide.comD Railway fares can be taxed to raise money for the government only if railways are privatised. 17 Which tax is levied on a stock of wealth rather than a flow of income? A company profits tax ... C an appreciation of the exchange rate D an increase in government debt 28
Cambridge International AS & A Level
gceguide.com3 A ball is fired horizontally with a speed of 41.0 m s–1 from a stationary cannon at the top of a hill. The ball lands on horizontal ground that is a vertical distance of 57 m below the cannon, as shown in Fig. 3.1. path of ball horizontal ground cannon 57 m ball, initial speed 41.0 m s–1 Fig. 3.1 (not to scale) Assume air resistance is ...
Cambridge International AS & A Level
gceguide.comunified atomic mass unit 1 u –27= 1.66 × 10 kg rest mass of electron m e = 9.11 × 10 –31 kg rest mass of proton m p = 1.67 × 10 –27 kg molar gas constant R = 8.31 J K –1 mol ... 7 A cannon fires a cannonball with an initial speed v at an angle α to the horizontal. H v
Cambridge International AS & A Level
gceguide.com6 UCLES 2021 970142M21 (b) Heating of FeO results in the formation of Fe 3 O 4, as shown. reaction 1 4FeO → Fe + Fe 3 O 4 Each formula unit of Fe 3 O 4 contains one Fe2+ and two Fe3+ ions. (i) Show how reaction 1 can be described as a disproportionation reaction. [1] Fe 3 O 4(l) can be electrolysed using inert electrodes to form Fe. (ii) Write the half-equation for the …
Cambridge International AS & A Level
gceguide.comM2 (two) different groups on each C atom in the C=C / end of the C=C double bond M3 no / restricted rotation about C=C 3 3(d)(ii) H2 / hydrogen 1 3(d)(iii) M1 / M2 absorptions seen in both spectra (any two): (same) both show an absorption at 1680–1730 (cm–1) because of C=O
Cambridge International AS & A Level
gceguide.comCambridge International AS & A Level ECONOMICS 9708/12 Paper 1 Multiple Choice February/March 2021 1 hour ... 6 The diagram shows the market for sugar which is initially in equilibrium at a price of OP. P O P1 P2 LMN quantity price S D R U T S A government then fixes a maximum price of OP1.
Cambridge International AS & A Level
gceguide.com14 In a high-wire circus act, a man of mass 85 kg is standing at rest at the midpoint of the wire. 20° 20° T T The wire on either side of the man is at an angle of 20 to the horizontal. What is the tension T in the wire? A 0.44 kN B 0.89 kN C 1.2 kN D 2.4 kN 15 A cylindrical block of ice of cross-sectional area 12 m
Cambridge International AS & A Level
gceguide.com4 Originally, chemists thought indium oxide had the formula InO. By experiment they showed that 4.8 g of indium combined with 1.0 g of oxygen to produce 5.8 g of indium oxide. The Ar of oxygen was known to be 16. Which value for the Ar of indium is calculated using these data? A 38 B 77 C 115 D 154
Cambridge International AS & A Level
gceguide.com5 LS 2020 970122N20 [Turn over (e) Aluminium oxide, Al 2 O 3, reacts separately with both acids and alkalis. (i) Write an equation for the reaction of aluminium oxide with excess aqueous hydrochloric acid. [1] (ii) Write an equation for the reaction of aluminium oxide with excess aqueous sodium hydroxide. [1] (f) Describe the lattice structure of silicon(IV) oxide.
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Fertiliser Calculations - Department of Primary Industries
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Fertiliser Calculations - Department of Primary Industries
www.dpi.nsw.gov.auFertiliser Calculations Carol Rose, Extension Agronomist, NSW Department of Primary Industries Kempsey DPI 496 August, 2004 The following simple calculations will allow you to accurately determine how much fertiliser to put on your soil. Before applying fertilisers of any type, you should assess the nutrient content of your soil, and understand ...
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www.epa.nsw.gov.au4 Department of Environment, Climate Change and Water NSW Prior studies This study is not unique in attempting to quantify the benefits of recycling a range of waste materials. It builds upon the initial Benefits of Recycling Study1 and the subsequent Environmental Benefits of Recycling Calculator2, by expanding the list of recyclable materials and adding landfill savings as an …