Answer: 186 g/mol
Explanation:
Weight of solvent (water)=100 g = 0.1 kg (1 kg=1000 g)
Molar mass of solute (impurity) = ?
Mass of solute (impurity) added = mass of solution - mass of solvent (water) = (118- 100) = 18 g
= change in freezing point
= freezing point constant for water = 
The molecular mass of the impurity is 186 g/mol.
The molar mass is 286.94 g/mol
They are called representative elements.
Answer:
2.29*10^24 molecules of water
Explanation:
1 molof water =6.022*10^23 molecules of water
therefore
molecules of water = 3.8*6.022*10^23
Answer:
Calcium carbonate is another example of a compound with both ionic and covalent bonds.
Explanation:
In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions.
