The answer is true, this is how dams work as the water goes through ot it pushed the turbines inside to generate electricity.
I hope this helps.
Answer:
1s² 2s² 2p⁵
Explanation:
The elements of group 17 are called halogens. These are six elements Fluorine, Chlorine, Bromine, Iodine, Astatine. Halogens are very reactive these elements can not be found free in nature. Their chemical properties are resemble greatly with each other. As we move down the group in periodic table size of halogens increases that's way fluorine is smaller in size as compared to other halogens elements. Their boiling points also increases down the group which changes their physical states. i.e fluorine is gas while iodine is solid.
Properties of fluorine:
1. it is yellow in color.
2. it is flammable gas.
3. it is highly corrosive.
4. fluorine has pungent smell.
5. its reactions with all other elements are very vigorous except neon, oxygen, krypton and helium.
6. Its atomic number of 9.
7. its atomic mass is 18.99 amu.
Electronic configuration:
₉F = 1s² 2s² 2p⁵
Answer:
c=2
Explanation:
Chemical equation:
Ca(OH)₂(aq) + HCl (aq) → CaCl₂(aq) + H₂O
Balanced chemical equation:
Ca(OH)₂(aq) + 2HCl (aq) → CaCl₂(aq) + 2H₂O
This is an acid-base reaction.
Two mole of acid (HCl) react with one mole of base (Ca(OH)₂) and form two mole of water and one mole of salt which is calcium chloride.
The given reaction also follow the law of conservation of mass.
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
Acid-Base Reaction.
Whenever an acid react with base salt and water is formed. Acid-base reaction is also called neutralization reaction.
The 3 and 2 to the right of the components are subscriptions.