Answer:
Explanation:
The dilution formula is:

Where M₁ and M₂ are the molar concentrations and V₁ and V₂ are the volumes of the concentrated and the diluted solutions.
Substitute:

Clear M₂ and compute:

Answer:
Symbol Be
atomic number 4
protons 4
neutrons 5
electrons 4
ion charge +2
Explanation:
Look at the periodic table and all the answers can be found there. If you would like to learn how to find them please message me below.
Find the mass of the empirical formula.
You must be given a sample of some kind to calculate the weight or know how many moles are present. Then you figure out what one mol would be. The key step is multiplying the empirical formula numbers by what it takes to make 1 mol.
It would be clearer if we were working from some choices.
Long wavelengths and low frequencies