The letters A to F in the table below represent some fertilisers and raw materials used in the preparation of fertilisers - NSC Physical Sciences - Question 10 - 2017 - Paper 2
Question 10
The letters A to F in the table below represent some fertilisers and raw materials used in the preparation of fertilisers.
A Sulphur B Air
C Methane D Pot... show full transcript
Worked Solution & Example Answer:The letters A to F in the table below represent some fertilisers and raw materials used in the preparation of fertilisers - NSC Physical Sciences - Question 10 - 2017 - Paper 2
Step 1
10.1.1 LETTERS representing TWO raw materials used in the preparation of compound F
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Answer
The raw materials used in the preparation of compound F are represented by the letters B (Air) and C (Methane).
Step 2
10.1.2 NAME or FORMULA of the acid needed to prepare compound F
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The name of the acid needed to prepare compound F is Nitric acid, which is represented by the formula HNO₃.
Step 3
10.1.3 LETTER representing the solid raw material used in the contact process
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The letter representing the solid raw material used in the contact process is A (Sulphur).
Step 4
10.1.4 Balanced equation for the preparation of compound E
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The balanced equation for the preparation of compound E (Ammonium sulphate) is:
2NH3(g)+H2SO4→(NH4)2SO4
Step 5
10.1.5 LETTER representing the raw material that supplies the primary nutrient needed for development of flowers
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The letter representing the raw material that supplies the primary nutrient needed for development of flowers is D (Potassium chloride).
Step 6
10.2.1 Phosphorus in the bag
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To calculate the mass of Phosphorus in the bag, we apply the ratio from the fertilizer composition:
\text{Mass of Phosphorus} = 0.0943 \times 2kg = 0.19kg $$
Step 7
10.2.2 Filler in the bag
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To find the mass of filler in the bag, we first determine the total parts of the mixture:
