Answer:
A bond forms between two non metals is covalent
Explanation:
For example Chlorine Cl is a non metal bond in Cl - Cl is covalent
Answer: Total number of Protons PLUS Neutrons
Explanation:
Hopes that helps
Answer:
<em>The correct option is the structure in the option D. </em>
Explanation:
Ammonia contains a single nitrogen atom bonded to three hydrogen atoms.
The structure present in option A shows a single nitrogen atom bonded with a single hydrogen atom hence it is not correct.
The structure in option B shows a nitrogen atom bonded to four hydrogen atoms hence it is also not correct.
The structure in option C shows a nitrogen atom bonded to two hydrogen atoms hence it is also not correct.
The structure in option D shows a nitrogen atom bonded to three hydrogen atoms which is the correct structure of ammonia (NH3).
Answer:
We can separate AgCl and PbCl₂ by adding hot water.
Explanation:
In order to separate group one salts/ions is important to consider their solubility.
PbCl₂ is more soluble in water then AgCl and, when we increase water's temperature, PbCl₂ solubility icireases significantly. However, AgCl solubility does not change considerably.
Therefore, when we add hot water to the solution, the PbCl₂ will be dissolved and AgCl will remain as a precipitate.
321.1 g of strontium phosphite will contain 0.76 moles of strontium phosphite in the beaker.
<u>Explanation:</u>
It is known that 1 mole of any substance is equal to the molar mass of that substance. So for the case of strontium phosphite, the molar mass is found to be 420.8 g/mol.
This means 1 mole of Strontium phosphite will contain 420.8 g of strontium phosphite.
Then 1 g of strontium phosphite will have 
moles of strontium phosphite.
So, 321.1 g of strontium phosphite will contain 
Thus, 321.1 g of strontium phosphite will contain 0.76 moles of strontium phosphite in the beaker.
