Answer:
28.52 L
Explanation:
First, let's calculate the density of the ocean, which is the mass divided by the volume:
d = m/V
d = 35.06/1
d = 35.06 g/L
So, for a mass of 1.00 kg = 1000.00 g
d = m/V
35.06 = 1000.00/V
V = 1000.00/35.06
V = 28.52 L
How all the data are expressed with two significant figures, the volume must also be expressed with two.
Answer:
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
Explanation:
Answer:
The van't Hoff factor = 3.20
Explanation:
Step 1: data given
Osmotic pressure of a 0.050 M Solution is 3.85 atm
Temperature = 20.0 °C
Step 2:
Osmotic pressure depends on the molar concentration of the solute but not on its identity.
We can calculate the osmotic pressure by:
π = i.M.R.T
⇒ with π = osmotic pressure = 3.85 atm
⇒ with i = van 't Hoff factor = TO BE DETERMINED
⇒ with M = molar concentration of the solution =0.050 M
⇒ with R = gas constant =0.08206 L * atm / mol* K)
⇒ with T = Temperature of the solution =20°C = 293 K
i = π / M.R.T
i = 3.85 / 0.050*0.08206*293
i = 3.20
The theoretical Van't Hoff factor is 4:
AlCl3(aq) → Al^3+(aq) + 3Cl^-(aq)
AlCl3 dissociates in 1 mol Al^3+ + 3 moles Cl-
Due to the interionic atractions the Van't hoff factor is less than the theoretical value of 4
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Percent yield represents to what extent the reaction runs to completion. In this, the theoretical yield is 50 grams (100% completion).
To calculate percent yield, divide the actual by the theoretical. In doing so, the percent yield is 88% (44/50).
