Pb(NO3)2 + 2KI ---> PbI2↓ + 2KNO3
the precipitation reaction
Answer:
1.67x10^23 atoms
Explanation:
From Avogadro's hypothesis, 1mole of any substance contains 6.02x10^23 atoms.
This means that 1mole of gold contains 6.02x10^23 atoms.
1 mole of gold = 197g
197g of gold contains 6.02x10^23 atoms.
Therefore, 54.5g of gold will contain = (54.5 x 6.02x10^23) /197 = 1.67x10^23 atoms
Hey there!:
240 mL bottle of the oral solution , so 43.2% alcohol
Therefore:
240 mL * 43.2 / 100
= 2.4 * 43.2
=> 103.68 mL of alchohol
Hope this helps!
