Answer:
Oxygen is solvent and Helium is solute.
Explanation:
Helium is a complety inert gas which do not react with other compounds whereas, oxygen can take part in chemical reaction with many compounds.
- if we mix 15 mL of oxygen and 5mL of helium then the oxygen is the solvent and helium is solute.
- In a mixture the compound with the greater volume is solvent and the compound with lwss volume is solute.
- in this case, oxygen has greater volume than that of helium so oxygen is solute and helium is solvent here.
The answer is a identical
Answer:
CaCN₂
Explanation:
A compound of calcium, carbon and nitrogen CaₐCₓNₙ in oxygen will burning producing:
CaₐCₓNₙ + O₂ → aCaO + xCO₂ + nNO₂
Moles of the oxides CaO, CO₂, NO₂ are:
CaO: 3.106g ₓ (1 mole / 56.08g) = <em>0.0554 moles of CaO = moles of Ca</em>
CO₂: 2.439g ₓ (1mole / 44g) = <em>0.0554 moles CO₂ = moles C</em>
NO₂: 5.097g ₓ (1mole / 46g) = <em>0.111 moles NO₂ = moles N</em>
Empirical formula is the chemical formula that represents the simplest ratio of elements in a compound.
Having as basis 0.0554 moles (The lower number of moles):
0.0554 moles Ca / 0.0554 = 1 Ca
0.0554 moles C / 0.0554 = 1 C
0.111 moles N / 0.0554 = 2N
Thus, the compound CaₐCₓNₙ has as empirical formula:
Ca₁C₁N₂ = <em>CaCN₂</em>