Final answer:
The flask should be inverted eight times to allow proper mixing. Inverting the flask multiple times ensures that all components of the solution are thoroughly mixed, resulting in a homogeneous solution.
Step-by-step explanation:
The flask should be inverted several times to allow proper mixing. The correct answer is d. 8 times. Inverting the flask helps to ensure that all the components of the solution are thoroughly mixed, resulting in a homogeneous solution.
Inverting the flask multiple times increases the chances of complete mixing, reducing the possibility of concentration gradients within the solution. This step is crucial in many chemical experiments and preparations to ensure accurate and consistent results.
By inverting the flask eight times, you can be confident that the solution is well mixed and ready for further experimentation or use.