Density is an intrinsic property, so it is independent of the amount of substance present: one gold coin would have the same density as a solid gold boulder.
So if the density of gold is 19.3 g/cm³, the density of a bar of gold and the pieces into which the bar is cut would all be 19.3 g/cm³.
Answer: The final concentration is 0.16 M.
Explanation:
According to the dilution law:
![M_1V_1=M_2V_2](https://tex.z-dn.net/?f=M_1V_1%3DM_2V_2)
where,
= molarity of stock solution = 1.60 M
= volume of stock solution = 54.0 ml
= molarity of diluted solution = ?
= volume of diluted solution = 218 ml
Putting these values:
![1.60\times 54.0=M_2\times 218](https://tex.z-dn.net/?f=1.60%5Ctimes%2054.0%3DM_2%5Ctimes%20218)
![M_2=0.40M](https://tex.z-dn.net/?f=M_2%3D0.40M)
Now 109 ml of this diluted solution is further diluted by adding 161 mL of water.
Again applying dilution law:
![0.40\times 109=M_3\times (109+161)](https://tex.z-dn.net/?f=0.40%5Ctimes%20109%3DM_3%5Ctimes%20%28109%2B161%29)
![0.40\times 109=M_3\times 270](https://tex.z-dn.net/?f=0.40%5Ctimes%20109%3DM_3%5Ctimes%20270)
![M_3=0.16M](https://tex.z-dn.net/?f=M_3%3D0.16M)
Thus the final concentration is 0.16 M
Heat from the Sun causes water to evaporate from the surface of lakes and oceans. This turns the liquid water into water vapor in the atmosphere. Plants, too, help water get into the atmosphere through a process called transpiration
Answer:contact forces or transfer energy(not sure)
Explanation:
The correct answer is A. apples coming in many different varieties.
This is because people who grow apples mix different kinds of apples in order to produce new ones, which means they are selecting the qualities they want the new apple to have in order to get the best results. B, C, and D are incorrect because that is the normal behavior or appearance of these animals - there is nothing extraordinary about them that was created thanks to selective breeding..