Your answer is:
B. Scientific questions are answered by doing experiments.
The only way you can answer a scientific question is by testing the hypothesis. :) Hope this helped!
Answer:

Explanation:
Hello there!
In this case, for such unit conversion we need to realize that 1 kg is equal to 1000 g, 1 g is equal to 1x10⁹ and 1 mL equals 1 cm³, therefore we apply:

Best regards!
The coefficient of Fe would be 2, the coefficient of Cl2 would be 3, while the coefficient of FeCl2 would be 2.
The balanced equation of the reaction would be as follows:

Thus, the coefficients of Fe, Cl2, and FeCl3 respectively would be 2, 3, and 2.
In other words, 2 moles of Fe require 3 moles of Cl2 to produce 2 moles of FeCl3 in a complete reaction.
More on balancing chemical equations can be found here: brainly.com/question/8062886?referrer=searchResults
The gas would diffuse as much as it could
A. hex- Normally with 6, the prefix is hex-. For example a polygon having 6 sides is known as hexagon.