Answer:
The correct answer is option 3, that is, homogenous and unsaturated.
Explanation:
In the given question, the mentioned mixture is homogenous as the KCl or potassium chloride has got dissolved completely, thus, the mixture is identical throughout the course, that is, one will not find any particles of KCl in it as it has got dissolved.
The mixture can also be considered unsaturated as the mixture can still dissolve more amount of KCl in it, and will get dissolve as no precipitate formation is going to take place.
Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, humidity in grams/cubic meter is 19.5.
Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.
Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.
So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter.
humidity =30 × 65% =19.5 grams/cubic meter
Therefore, humidity in grams/cubic meter is 19.5.
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Answer:19.5 grams/cubic meter
Explanation:30 times 65% search it it equals 19.5
b. Uranium-235.
c. Cobalt-69.
d. Carbon-12.
B
It changes direction when it passes through an opening
С
It changes its speed and wavelength when it passes through an opening
D
It changes direction when it passes from one medium to another
E
It changes its speed and wavelength from one medium to another.
F
It changes direction when it bounces off of a solid surface.
If a sound wave refracts,It changes its speed and wavelength when it bounces off of a solid surface,It changes its speed and wavelength when it passes through an opening, and It changes direction when it passes from one medium to another. Therefore, option A, C and D are correct.
An important case in which sound waves change form or spread out is called refraction. This phenomenon affects the bending of a sound wave owing to changes in the wave's speed.
Refraction is the reason ocean waves near a shore parallel to the beach and why glass lenses can be used to focus light waves.
If the air above the earth is warmed than that at the surface, sound will be change shape back downward toward the surface by refraction. Soundpropagates in all directions from a point source.
Thus, option A, C and D are correct.
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b. A scientific law describes what occurs every time in a situation.
c. A scientific law is constantly modified.
d. A scientific law is developed without experimentation.
The correct answer is B.
scientific law which describes what occurs every time in a situation. Scientific law always applies under same condition.
Laws differs from scientific theory because they does not posit explanation of phenomena.
Different laws takes mathematical forms. Scientific law is being associated with natural science but social sciences also contains laws.
A good example of scientific law in social sciences is Zipf's law.
Answer:
B. a law is a proven fact that cannot be changed.
Explanation: