Explanation:
Answer
( 58.3 mL ) (
0.789 g
1 mL
) (
1 mole
46 g
) = 1 mole C2H5OH
( 500 mL H2O ) (
1 g
1 mL
) (
1 mole
18 g
) = 27.8 mole H2O
The total moles = 1 mole C2H5OH + 27.8 mole H2O = 28.8 moles
The mole fraction =
moles C2H5OH
total moles
=
1 mole C2H5OH
28.8 total moles
= 0.035
The mole percent would be 3.5%.
What is the weight fraction?
Answer
( 58.3 mL ) (
0.789 g
1 mL
) = 46 g C2H5OH
( 500 mL H2O ) (
1 g
1 mL
) = 500 g H2O
The total mass = 46 g C2H5OH + 500 g H2O = 546 g
The mass fraction =
mass C2H5OH
total mass
=
46 g C2H5OH
546 total grams
= 0.084
The mass percent would be 8.4%.
What is the molarity?
Answer
The molarity =
moles C2H5OH
L of solution
=
1 mole C2H5OH
.5583 L
= 1.79 M
What is the molality?
Answer
The molality =
moles C2H5OH
kg of solvent
=
1 mole C2H5OH
0.5 kg H2O
= 2
<span>Mirage is due to (A). unequal heating of different parts of the atmosphere,
because that produces unequal density of different parts of the atmosphere,
which bends the light.
</span>
The pump is powered by an electric motor that drives an impeller, or centrifugal pump. The impeller moves water, called drive water, from the well through a narrow orifice, or jet, mounted in the housing in front of the impeller.
Answer:
c. I-O psychology.
Explanation:
According to my research on the different types of psychology fields, I can say that based on the information provided within the question he should consider studying I-O psychology. This is Industrial-Organizational Psychology and focuses on using psychology principles to solve problems in the workplace as well as improving workplace environments. Which is what Stefan would be interested in.
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