Toulene = 35.6 g
Benzene = 125 g = 0.125 kg
Molecular weight of Toluene C6H5CH3 = 92.1g/mol
Moles of toulene = 35.6 g / 92.1 g/mol = 0.3865 mol
Now the molarity of the toulene in the given solution = 0.3865 / 0.125 = 3.092 m
Molarity of C6H5CH3 = 3.092 m
All of the boxes in the chart are Gg
1. 100%
2. 0%
Answer:
229%
Explanation:
The equation of the reaction is;
4Al(s) + 3O2(g) ----> 2Al2O3(s)
We must first determine the limiting reactant;
Number of moles of Al2O3 produced = mass/molar mass = 72.4g/101.96 g/mol = 0.71 moles
For Al
Number of moles reacted = mass/molar mass = 49.2g/27 g/mol = 1.8 moles
If 4 moles of Al yields 0.71 moles of Al2O3
1.8 moles of Al will yield 1.8 × 0.71/4 = 0.32 moles of Al2O3
For O2
Number of moles reacted = mass/molar mass = 42.6g/32g/mol = 1.33 moles
If 3 moles of O2 yields 0.71 moles of Al2O3
1.33 moles of O2 will yield 1.33 × 0.71/3 = 0.31 moles of Al2O3
Oxygen is the limiting reactant.
% yield = actual yield/ theoretical yield × 100/1
% yield = 0.71 moles/0.31 moles × 100
% yield = 229%
Answer:
Concentration of sodium nitrate solution is 0.636 mmol/L
Explanation:
We know, 
So, 
Concentration in mmol/L is defined as number of mmol of solute dissolved in 1000 mL of solution
Here solute is 
Total volume of solution = Total volume of volumetric flask = 450. mL
Hence concentration of solution = 
So, concentration of sodium nitrate solution is 0.636 mmol/L
Answer is D. <span>use of astrology to predict the personality of a child
Astrology is not a science, astronomy is a science.
Astrology is more related to myths, legend and human interpretation of the sky, universe, planets.
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