Answer:
66.0 atm
Explanation:
We can calculate the osmotic pressure (π) using the following expression.
![\pi = i \times M \times R \times T](https://tex.z-dn.net/?f=%5Cpi%20%3D%20i%20%5Ctimes%20M%20%5Ctimes%20R%20%5Ctimes%20T)
where,
Step 1: Calculate i
Sodium sulfate completely dissociates according to the following equation.
Na₂SO₄ ⇒ 2 Na⁺ + SO₄²⁻
Since it produces 3 ions, i = 3.
Step 2: Calculate M
We can calculate the molarity of Na₂SO₄ using the following expression.
![M = \frac{mass\ of\ solute }{molar\ mass\ of\ solute\ \times liters\ of\ solution} = \frac{65.0g}{142.04g/mol \times 0.500L} =0.915M](https://tex.z-dn.net/?f=M%20%3D%20%5Cfrac%7Bmass%5C%20of%5C%20solute%20%7D%7Bmolar%5C%20mass%5C%20of%5C%20solute%5C%20%5Ctimes%20liters%5C%20of%5C%20solution%7D%20%20%3D%20%5Cfrac%7B65.0g%7D%7B142.04g%2Fmol%20%5Ctimes%200.500L%7D%20%3D0.915M)
Step 3: Calculate T
We will use the following expression.
K = °C + 273.15
K = 20°C + 273.15 = 293 K
Step 4: Calculate π
![\pi = 3 \times 0.915M \times \frac{0.08206atm.L}{mol.K} \times 293K =66.0 atm](https://tex.z-dn.net/?f=%5Cpi%20%3D%203%20%5Ctimes%200.915M%20%5Ctimes%20%5Cfrac%7B0.08206atm.L%7D%7Bmol.K%7D%20%20%5Ctimes%20293K%20%3D66.0%20atm)
I think it's <em>80 . 12</em>
pls tell me if correct
Answer:
None of the above.
Explanation:
A nebula: A star forms from massive clouds of dust and gas in space, also known as a nebula. Protostar: As the mass falls together it gets hot. Main sequence star. Red giant star. White dwarf. Supernova, and the Neutron star or black hole are all apart of the life cycle of Sol.
Answer: BIt shows that a lunar eclipse occurs when the Earth casts a shadow over the moon.