Question

Research problem: Separate a mixture of I2(s), potassium bromide(s), iron powder, and aluminum oxide powder, and determine the percent by mass of each component of the mixture.

∘ This should involve only physical (not chemical) processes.
∘ It is not practical to using melting to separate any of the above solids.
∘ Give careful thought in designing the procedure so that the mass of each component will be obtained with the highest degree of accuracy possible.
∘ Tell the student each time he or she needs to weigh the sample so the percent of each component can be determined.

Answer 1

To separate a mixture and determine the percent by mass of each component, you need to weigh the sample, use physical and chemical methods to separate the components, weigh each component, and calculate the percent composition.

Step-by-step explanation:

Separation of Mixture and Determination of Percent by Mass

To separate a mixture of I2(s), potassium bromide(s), iron powder, and aluminum oxide powder and determine the percent by mass of each component, several steps need to be followed.

1. Weigh the sample of the mixture using a balance.
2. Use physical and chemical methods to separate the components of the mixture. This may include techniques such as filtration, distillation, and precipitation.
3. Weigh each separated component using a balance.
4. Calculate the percent by mass of each component by dividing the mass of each component by the total mass of the mixture and multiplying by 100.

Repeat these steps for each sample taken from the mixture to determine the percent by mass of each component. By following these steps, you can accurately separate and determine the percent composition of each component in the mixture.