Answer:
Explanation:
Partial pressure of oil = mole fraction of oil x total pressure
mole fraction of oil = mole of oil / mole of water + mole of oil
= mole of oil = mass of oil / molecular weight of oil
= 20 / 100 = .2
mole of water = 80 / 18
= 4.444
mole fraction of oil = .2 / .2 + 4.444
= .2 / 4.644
Partial pressure of oil = mole fraction of oil x total pressure
= (.2 / 4.644 ) x 760 mm
= 32.73 mm Hg .
Answer: The density of the object will be 
Explanation:
Density is defined as the mass contained per unit volume.
Given : Mass of object = 19.6 grams
Volume of object= 
Putting in the values we get:
Thus density of the object will be
The law of conservation of energy or first law of thermodynamics
Explanation:
From the context we can infer that Mr. Jones was describing the law of conservation of energy.
According to the law of conservation of energy:
"energy is not created nor destroyed by can be transformed from one form to another" .
The captured energy is a form of energy and it is change into other forms in the ecosystem.
Energy is initially captured in the ecosystem by plants.
learn more:
Laws of thermodynamics brainly.com/question/3564634
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