First, determine the number of moles of gold.
Number of moles =
Given mass of gold =
Molar mass of gold = 196.97 g/mol
Put the values,
Number of moles of gold =
= or
Now, molarity =
Put the values, volume of ocean =
Molarity =
=
Thus, average molar concentration =
Answer:
Electrons
Explanation:
The breaking and forming of bonds between atoms in substances results in changes in the number of electrons in the substance.
- Atoms combined in order to share, gain or lose electrons for it to be stable.
- The noble gases have a set up configuration which makes them stable.
- All atom tend to mimic the noble gases.
Answer:
the answer is
the electronegativity of the elements from L to R increases
Diminish gradually in size, amount,or strength.
Answer:
65.47∘C
Explanation:
Specific heat capacity, c = 0.128 J/(g⋅∘C)
Initial temperature = 20.0 ∘C
Final temperature = ?
Mass = 52.4 g
Heat = 305 J
All these variables are related by the following equation;
H = m c ΔT
ΔT = H / mc
ΔT = 305 / (52.4 * 0.128)
ΔT = 45.47∘C
ΔT = Final Temperature - Initial Temperature
Final temperature = ΔT + Initial temperature
Final temperature = 45.47∘C + 20.0 ∘C = 65.47∘C