Answer:
0.417 mol could be extracted from a medal that weighs 115 grams
Explanation:
Our Olympic medal weighs 115 g and we know that 71.5% is gold so how much from this medal is gold?
100 % ____ 115 g
71,5 % ____ 82.22 g
Molar mass of Au is 196.97 g/m
Mass / Molar mass = Moles
82.22 g / 196.97 g/m = 0.417 moles
Answer:
When acetylene gas is passed over ammoniacal silver nitrate soln gives white ppt of disilveracetylide is formed. - When acetylene is passed over ammoniacal silver nitrate solution, white ppt of disilveracetylide is formed.
- Heat capacity if silver =c=0.233J/kg°C
- Initial temperature=100°C
- Final Temperature=250°C
First we need to find change in temperature.
Now
- Heat =Q(As we are using thermodynamics)
Answer:
It is called: Dipole-Dipole Interaction.