Answer:
v hiddleston
Explanation:
Geraldo polizzi hooray cc I'm at DDT mlm
fibro GM
<span>.068443 mol/L
First we must find the molar mass of NaCl. We find the atomic mass of sodium and chlorine and add them:
Na: 22.9898
Cl: 35.453
22.9898 + 35.453 = 58.4428g/mol
The we find the number of mols contained in 400mg of NaCl:
.4g / 58.4428g/mol
.0068443 mol
Since 100mL is a tenth of a liter we can multiple the number of mols by ten:
.068443 mol/L</span>
Answer: the oxidation of the copper (it turning green)
Explanation:
Answer:
166 torr
Explanation:
Let’s call ethane Component 1 and propane Component 2.
According to Raoult’s Law,
where
p₁ and p₂ are the vapour pressures of the components above the solution
χ₁ and χ₂ are the mole fractions of the components
p₁° and p₂° are the vapour pressures of the pure components.
Data:
p₁° = 304 torr
p₂° = 27 torr
n₁ = n₂
1. Calculate the mole fraction of each component
χ₁ = n₁/(n₁ + n₂)
χ₁ = n₁/n₁ + n₁)
χ₁ = n₁/(2n₁)
χ₁ = ½
χ₁ = 0.0.5
χ₂ = 1- χ₁ = 1- 0.5 = 0.5
2. Calculate the vapour pressure of the mixture