Answer:
https://courses.lumenlearning.com/cheminter/chapter/energy-in-food-and-nutrition/
Explanation:
Molarity = (numer of mole solute) / (volume of the solution)
number of mole solute = mass solute/molar mass solute
Molarity =( mass solute/molar mass solute)/ (volume of the solution)=
= ( mass solute/((molar mass solute)*(volume of the solution))
If m is a mass of the solute, M is a molar mass a solute, V is a volume of the solution (we can think as a volume of water added).
Molarity = m/(M*V)
All of the questions here are pertaining to the colligative properties of a solution and the preparation of solutions. Maybe, it would be best if you understand the equations to be used in order to answer these questions.<span>
Freezing point depression or Boiling point elevation:
</span><span>ΔT = -K (m) (i)
</span>ΔT is the change in the freezing point or the boiling point not the freezing point/boiling point. Therefore, it should be added to the original value of the property of the solvent.
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K is a constant called the molal freezing point depression constant and for the boiling point is the boiling point elevation constant. It is a property of the solvent.
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m is the concentration of the solute in the solvent in terms of molality or kg solute/kg solvent.
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i is the vant hoff factor which will represent the number of ions which the solute dissociates when in solution.</span>
Diffusion of one state of matter into another: Solid can diffuse in liquid. When sugar is added to water, whole water becomes sweet without stirring it because of diffusion of sugar into water. ... Carbon dioxide and oxygen are the two gases in air which dissolves in water by diffusion.
The answer is: C. Petroleum.
Petroleum consists of hydrocarbons with between four and twenty carbon atoms.
Petroleum is a mixture of many different hydrocarbons: alkanes (paraffins), cycloalkanes and alkenes (olefins).
Petroleum is used primarily as a fuel in combustion engines.
Most motor oils are made from a heavier, thicker petroleum hydrocarbons.
