Answer:
0.104 M
Explanation:
<em>A saline solution contains 0.770 g of NaCl (molar mass = 58.55 g/mol) in 133 mL.</em>
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The molar mass of the solute (NaCl) is 58.55 g/mol. The moles corresponding to 0.770 g are:
0.770 g × (1 mol/55.85 g) = 0.0138 mol
The volume of solution is 133 mL. In liters,
133 mL × (1 L/1000 mL) = 0.133 L
The molarity of NaCl is:
M = moles of solute / liters of solution
M = 0.0138 mol / 0.133 L
M = 0.104 M
Answer:
the oil spreads to cover the water
Answer:
Data is a raw and unorganized fact that required to be processed to make it meaningful. ... Generally, data comprises facts, observations, perceptions numbers, characters, symbols, images, etc. Data is always interpreted, by a human or machine, to derive meaning. So, the data is meaningless.
Explanation:
Answer:
Goldilocks Zone
Explanation:
The habitable zone is the area around a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planets.
Imagine if Earth was where Pluto is. The Sun would be barely visible (about the size of a pea) and Earth's ocean and much of its atmosphere would freeze. On the other hand, if Earth took Mercury’s place, it would be too close to the Sun and its water would form a steam atmosphere, quickly boiling off. The distance Earth orbits the Sun is just right for water to remain a liquid. This distance from the sun is called the habitable zone, or the Goldilocks zone.
Answer:
It is polar.
Explanation:
Water is a polar solvent and it can only dissolve another solute or substance.
As a general rule of solubility "likes dissolves likes".
This implies that when a polar solvent is used, it will dissolve a polar solute.
Also, a non-polar solute will only dissolve in a non-polar solvent.
- Water is an example of polar solute.
- Other solutes such as salt can dissolve in water because they are polar in nature.
- A non-polar solvent is oil.
