Use the following equations to fill the chart.
E = hf
where
h = 6.63 x 10⁻³⁴ J/s, Planck's constant
f = frequency Hz
E = quanta of energy, J
c = fλ
where
c = 3 x 10⁸ m/s, the velocity of light
λ = wavelength, m
If energy is given in J/mmol, divide by Avogadro's number, N = 6.02 x 10²³, to convert it to J.
The completed table is shown below.
Answer:
892 g/mol
Explanation:
Step 1: Given and required data
- Mass of the nonvolatile and a non-electrolyte solute: 11.01 g
- Volume of solution: 158.1 mL = 0.1581 L
- Osmotic pressure (π): 1.91 atm
- Ideal gas constant (R): 0.0821 atm.L/mol.K
- Absolute temperature (T): 298 K
Step 2: Calculate the molarity (M) of the solution
The osmotic pressure is a colligative property that can be calculated using the following expression.
π = M × R × T
M = π / R × T
M = 1.91 atm / (0.0821 atm.L/mol.K) × 298 K
M = 0.0781 M
Step 3: Calculate the molecular weight of the solute
We will use the following expression for molarity.
M = mass of solute / molecular weight of solute × liters of solution
molecular weight of solute = mass of solute / M × liters of solution
molecular weight of solute = 11.01 g / (0.0781 mol/L) × 0.1581 L
molecular weight of solute = 892 g/mol
C. They come from energy sources that never run out.
General relativity was the first theory proposed by Albert Einstein. The theory is the geometric theory of gravitation. It is the current description of gravitation in modern physics today. It was published in 1915.