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When a sample of sulfur undergoes a specific process called crystallization, its molecules arrange themselves in an orderly pattern to form crystals. This process involves cooling the molten sulfur slowly, allowing the molecules to align and solidify into a crystalline structure.
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Which methods is used to obtain pure copper sulphate from impure sample and how?
One method to obtain pure copper sulfate from an impure sample is by recrystallization. In this process, the impure sample is dissolved in water, and then the solution is heated and slowly cooled to allow pure copper sulfate crystals to form. These crystals are then filtered out and dried to obtain the pure compound.
How could you get a sample if soluble salt?
To get a sample of soluble salt, you can dissolve the salt in water, filter out any impurities, then evaporate the water to leave behind the salt crystals. This will give you a pure sample of the soluble salt.
Why crystals disappear during suction filtration of a sample crystallized from benzene?
Crystals may disappear during suction filtration of a sample crystallized from benzene if the crystals dissolve in the solvent being used for filtration, or if they break up into smaller particles that pass through the filter. This can happen if the crystals are not fully dried or if too much force is applied during filtration.
What impurity is removed during the recrystallization process?
During the recrystallization process, impurities present in the initial sample are removed by dissolving the sample in a hot solvent and then allowing it to cool slowly. As the solution cools, impurities are excluded from the growing crystal lattice and remain in the solvent or are trapped within small crystals that are later filtered out. The final purified crystal product is then separated from the remaining solution.
Why is a crystal of pure calcium carbonate made in a lab not a sample of the mineral calcite?
A crystal of pure calcium carbonate made in a lab is not a sample of the mineral calcite because calcite is a specific naturally occurring crystalline form of calcium carbonate with a distinct crystal structure and composition. Lab-made crystals may have different characteristics due to the manufacturing process and conditions, making them distinct from natural minerals like calcite.
Which methods is used to obtain pure copper sulphate from impure sample and how?
One method to obtain pure copper sulfate from an impure sample is by recrystallization. In this process, the impure sample is dissolved in water, and then the solution is heated and slowly cooled to allow pure copper sulfate crystals to form. These crystals are then filtered out and dried to obtain the pure compound.
What arrangement of atoms in a repeating pattern in a mineral causes the formation of?
The arrangement of atoms in a mineral sample can cause the formation of crystals.
How much of a 100 gram sample would remain unchanged after 2 hours?
To determine how much of a 100 gram sample would remain unchanged after 2 hours, it is necessary to know the specific decay rate or change process of the sample. For example, if the sample undergoes a decay process with a known half-life, you can calculate the remaining amount using the formula for exponential decay. Without this information, it's impossible to provide an exact answer. In general, if no decay occurs, the entire 100 grams would remain unchanged.
A space probe has returned samples to earth of crystals found on a distant planet In studying these crystals scientist discovered that a 0.994g sample will absorb 202.7 J heat when the temperature?
The crystals have a specific heat capacity of 203 J/g°C.
How much activity is in 25 kilograms of 5 percent enriched uranium?
To calculate the activity of the uranium, you would need to know the specific activity of the enriched uranium sample. Activity is measured in becquerels (Bq) or curies (Ci) and it indicates the rate at which a sample undergoes radioactive decay. The specific activity takes into account both the enrichment level and the total mass of the sample.
How could you get a sample if soluble salt?
To get a sample of soluble salt, you can dissolve the salt in water, filter out any impurities, then evaporate the water to leave behind the salt crystals. This will give you a pure sample of the soluble salt.
Why crystals disappear during suction filtration of a sample crystallized from benzene?
Crystals may disappear during suction filtration of a sample crystallized from benzene if the crystals dissolve in the solvent being used for filtration, or if they break up into smaller particles that pass through the filter. This can happen if the crystals are not fully dried or if too much force is applied during filtration.
What precipitates from urine when refrigerated?
Keeping a urine sample refrigerated allows the pH to aid in identification of crystals. Crystals form when urine is kept cool.
What structure can be observed that identifies a sample as a mineral?
Minerals are crystalline in structure. If you're looking at a solid object of inorganic origin, that occurs naturally, and it has crystals, the crystals are minerals.
What is the difference between sample size and sample unit?
sample size is the specific size of a thing like the how long or wide. while sample unit is the whole thing not referring to specific number size.
What happens to a sample of matter when it undergoes a chemical change?
The reactants are transformed in products, substances with another type of molecules and properties.
A space probe has returned samples to earth of crystals found on a distant planet In studying these crystals scientist discovered that a 0994g sample will absorb 2027 J heat when the temperature?
40.78
