Answer:
9
Explanation:
14-5.=pOH
- Hope that helps! Please let me know if you need further explanation.
They help us understand the concept of evolution and they help us understand what our earth was like before and after pangea or the great continental drift
Physical change is described as the change that affects the form of a chemical compound but not its chemical composition. It involves the change in physical properties.
When a solid is dissolved in the liquid the solid gets dissolved in the liquid there is no breakage in the bonds and same composition of the compounds are at the end of the change. When a solution changes colour due to the addition of an other substance the bonds are broken or formed between molecules or atoms. The substance with a certain set of properties is turned into different substance with different properties. Hence it is a chemical change.
Two liquids producing heat when mixed together results in the temperature change. The heat is produced due to the increase in the temperature. Hence it is a chemical change.
When two solutions are combined gas is released due to the temperature change. This is also a chemical change
Therefore the answer is A.
The most important or most likely characteristic would be that the acid is to require a special like container that would be corrosive; meaning it can hold and take the dissolving action of other substances.
