The difference between true north and magnetic north is called "declination."
Elements with 7 valence electrons are extremely reactive, while elements with 8 valence electrons practically don't react at all.
This is caused by the fact that all molecules want to have 8 valence electrons; that's just the scientific fact. So, if an element already has 8 valence electrons, it doesn't need to react with anything. If the element only has 7 valence electrons, however, it really wants to react with something with 1 valence electron to get to that special number 8.
Since the total distance for all three of the planets is 196.2 million miles, you would add planet i and planet iii, then subtract that number from 196.2
planet i and planet iii equaled 54.9 million miles, that subtracted from 196.2 equals 141.3
So your answer is 141.3 million miles
Answer:
density = 5000 [kg/m^3]
Explanation:
Density is defined as the relationship between mass and volume.
Now we have:
m = 100 [gr] = 0.1[kg]
V = volume = 20[cm^3]
![20[cm^{3}]*1[\frac{m^{3} }{100^{3} cm^{3} } ] = 2*10^{-5}[m^{3} ]](https://tex.z-dn.net/?f=20%5Bcm%5E%7B3%7D%5D%2A1%5B%5Cfrac%7Bm%5E%7B3%7D%20%7D%7B100%5E%7B3%7D%20cm%5E%7B3%7D%20%7D%20%5D%20%3D%202%2A10%5E%7B-5%7D%5Bm%5E%7B3%7D%20%5D)
density = 0.1 / (2 x 10^-5)
density = 5000 [kg/m^3]
