<span>Ores are naturally occurring rocks that contain metal or metal compounds in sufficient amounts to make it worthwhile extracting them. For example, iron ore is used to make iron and steel.</span>
Answer is: The total energy in the system remains the same as the decrease in chemical energy equals the increase in thermal and radiant energy.
The law of conservation of energy states that the total energy of an isolated system remains constant; energy can neither be created nor destroyed; it can only be transformed or transferred from one form (in this example chemical energy) to another (in this example thermal and radiant energy).
Radiant energy or light is the only kind of energy we can see with our eyes. Light have different wavelenght and different color.
Chemical energy - this type of energy is often found in things like batteries or food.
Answer:
You need to dissolve 144 gr of glucose in 0.8 liters of water to have a 1 M solution.
Explanation:
Molarity is the amount of moles per liter of solution --> moles/liters. We are trying to get a 1 molar solution and we also know the liters (0,8L) so
after canceling liters of water you get 0,8 moles of glucose.
Answer:
When an ionic compound is dissolved in water, it dissociates into positive and negative ions. As a result these compounds when dissolved in water will conduct electricitya as they will have free electrons for conduction.
When a covalent compound is dissolved in water, it does not dissociate into ions. As there will be no electrons present which are free, hence, covalent compounds will not be able to conduct electricity when dissolved in water.
When hydrogen atoms are energized by electricity, an emission spectrum of specific colors occurs because of the different wavelengths.
