Answer: 3.05 grams
Explanation:
To find the mass in grams, we need to use Avogadro's number and the molar mass of lithium.
Avogadro's number: 6.022×10²³ atoms/mol
Molar mass: 6.94 g/mol
The majority of the mass of the atom is located in the nucleus. Remember that the nucleus contains both protons and neutrons and therefore, most of the mass of the atom.
Answer:
3.018 x 10⁻⁶ M.
Explanation:
- Co(OH)₂ dissociates in solution according to the equation:
<em>Co(OH)₂ →</em> <em>Co²⁺ + 2OH⁻.</em>
<em></em>
<em>∵ Ksp = [Co²⁺][OH⁻]² = (s)(2s)² = 4s³.</em>
<em />
∴ 4s³ = 1.10 x 10⁻¹⁶.
∴ s³ = 1.10 x 10⁻¹⁶/4 = 2.75 x 10⁻¹⁷.
∴ s = ∛(2.75 x 10⁻¹⁷) = 3.018 x 10⁻⁶ M.
This is how Magnesium appears on the table of elements
12
Mg
Magnesium
24.305
The symbol for it is Mg
D. I hope you have a good morning
- Josie Annette
