use the data given to determine the density of molten potassium tungstate at 925
ID: 1878362 • Letter: U
Question
use the data given to determine the density of molten potassium tungstate at 925 C degrees.
The buoyancy method can be used to determine the densities of high melting or corrosive liquids. A platinum sinker suspended by a thin platinum wire from a balance weighed 58.35 g in air. When it was completely immersed in water at room temperature, the apparent weight of the sinker was 49.26g. The sinker was dried and immersed in a crucible containing molten potas- sium tungstate at 925°C. Its new apparent weight was 30.17 g. Use the data given to determine the density of molten potassium tungstate at 925 °C 3.Explanation / Answer
Exact weight of Platinum wire (w1)= 58.35 g
apparent weight of sinker in water(W2) = 49.26 g
Specific gravity of platinum wire = weight of platinum wire/apparent weight in water
i,e Specific gravity = W1/W2 = 58.35 g / 49.26 g
= 1.184
apparent weight of sinker in molten potassium (w3) = 30.17 g
specific gravity of potassium =(apparent weight in molten potassium/normal weight) * Specific gravity of platinum wire
=(30.17 / 58.35 g) * 1.1845
= 0.612 = 612 Kg/m^3 is
Exact weight of Platinum wire (w1)= 58.35 g
apparent weight of sinker in water(W2) = 49.26 g
Specific gravity of platinum wire = weight of platinum wire/apparent weight in water
i,e Specific gravity = W1/W2 = 58.35 g / 49.26 g
= 1.184
apparent weight of sinker in molten potassium (w3) = 30.17 g
specific gravity of potassium =(apparent weight in molten potassium/normal weight) * Specific gravity of platinum wire
=(30.17 / 58.35 g) * 1.1845
= 0.612 = 612 Kg/m^3 is the density of molten potassium at 925 C
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