Answer:
The rain containing excess of acid I called acid rain
Answer:
The youngest rock layers are at the top and the oldest are at the bottom, which is described by the law of superposition.
Explanation:
Hello!
Mercury is the only metal that takes liquid form at room temperature.
The metal is also very toxic to humans, so "playing with it" is a bad idea
this metal used to be used in thermometers, but most of them today don't use mercury anymore
I hope this helps, and have a nice day!
Explanation:
The chemical reaction equation will be as follows.
As 1 mole 
reacts with 1 mole of 
Hence, moles of = Molarity × Volume (in mL)
= 0.5 × 38.0 mL
= 0.019 mol
Moles of = Molarity × Volume (in mL)
= 0.6 × 42.0 mL
= 0.0252 mol
As moles of CuS is less than the moles of . This means that CuS is the limiting reagent.
Thus, maximum moles of CuS formed are 0.019 mol. As molar mass of CuS is 95.6 g/mol.
Therefore, maximum mass of CuS can be formed is 
= 1.8164 g
Thus, we can conclude that maximum mass of CuS formed is 1.8164 g.
Answer:
Yes
Explanation:
A single covalent bond forms when two atoms share one pair of electrons.
Covalent bonds are formed between two or more atoms having zero or very small electronegativity difference. Such bonds exists between molecules of non-metals.
- To form a covalent bond, each of the two participating atoms would put down an unpaired electron.
- The unpaired electrons form a shared pair of electrons between them.
- This shared pair of electrons constitutes the electron cloud that binds the two atoms together.
- The shared pair of electron is the covalent bond.
