The correct answer is letter D. distance to a star.
In astrophysics, M = m - 5 log(d/10)
where
m - apparent magnitude
<span>M - absolute magnitude </span>
<span>m - apparent magnitude </span>
<span>d - distance measured in parsec </span>
Answer:
Ionic or electrovalent bonds
Explanation:
The bond type that will result when the two atoms combine is an electrovalent or ionic bond. This is due to the large electronegativity difference between the given species.
- An ionic bond usually forms between metals and non-metals.
- The metal being electropositive has a very low electronegativity value.
- Non-metals are electronegative.
- The Cs will lose it electrons to F
- This leaves a net negative charge on F and a net positive charge on Cs.
Answer:
K = [HI]² / [H₂] [I₂]
Explanation:
To write the expression of equilibrium constant, K, it is important that we know how to obtain the equilibrium constant.
The equilibrium constant, K for a given reaction is simply defined as the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient. Thus, the equilibrium constant is written as follow:
K = [Product] / [Reactant]
Now, we shall determine the equilibrium constant for the reaction given in the question above. This can be obtained as illustrated below:
H₂(g) + I₂(g) —> 2HI (g)
K = [HI]² / [H₂] [I₂]
Answer:
inert ; take up electrons
Nonpolar compound would be symmetrical