Answer:
The answer is B
[The extracting solvent should be non-toxic and readily available]
Explanation:
The extracting solvent should not pose a risk to life (or the risk have to be minimum) and be available in large quantity.
A. Most of the extracting solvents are volatile, and is a good think because you can remove them by distillation.
C. The extraction solvent should <u>not</u> react with the solute, because you lose the extracted compound.
D. The extraction solvent should <u>not</u> be miscible with water. Usually you extract compounds organic compounds from water using an appropriate extracting solvent.
Answer: The force which exists between particle of same kind of substance called cohesion force. A . B . The force of cohesion is defined as the force of attraction between molecules of the same substance.
Explanation:
Complete question is;
When solid materials are heated.the heat absorbed/added to the materials caused the materials to change its form from?
Answer:
From solid to liquid
Explanation:
When we heat solid materials, the heat causes the forces of attraction between the molecules to become weaker and as such, the material becomes more loose than it was in the solid state. As a result, the material now becomes a liquid because the molecules now have lesser forces of attraction and are a bit loose.
Answer:
Boron has a larger radius and the protons in carbon exert more pull.
Explanation:
Remember than elements have greater radius as they are closer to the bottom left corner, so boron would have the larger radius here. Carbon has a smaller radius, which makes it easier for the protons in carbon to exert more pull.
