CaF₂ ↔ Ca²⁺ + 2 F⁻
Solubility product Ksp is the product of ions forming a sparingly soluble salt each ion raised to power equal its stoichiometric factor in balanaced equation.
So:
Ksp CaF₂ = [Ca²⁺] [F⁻]²
= (0.1) (0.02)² = 4.0 x 10⁻⁵
There should be 1.8 mol Na
Answer:
A heating curve graphically represents the phase transitions that a substance undergoes as heat is added to it. The plateaus on the curve mark the phase changes.The second change of phase is boiling, as the temperature stays the same during the transition to gas.
Explanation:
Hi there!
We can use the following conversions to solve:
Total mass --> amount of mols --> amount of atoms (Avogadro's number)
Begin by calculating the amount of boron trifluoride in 3.61 grams:
3.61 g * (1 mol BF₃ / 67.8 g) ≈ 0.0532 mol BF₃
Use avogadro's number to convert:
0.0532 mol * 6.02× 10²³atoms / 1 mol = 3.203 × 10²² atoms
Answer:
10 moles
Explanation:
The first thing to do is to write the balance chemical reaction
According to the balanced chemical equation, if the hydrochloric acid is in excess, one mol of iron forms one mole of iron (II) chloride, which is as many moles as iron. So 10 moles of iron will form 10 moles of iron (II) chloride.