Answer:
Empirical formulas can be determined from the percent composition of a compound. In order to determine its molecular formula, it is necessary to know the molar mass of the compound. Chemists use an instrument called a mass spectrometer to determine the molar mass of compounds.
hope this helps :3
The 5 levels consist of individual, population, community, biome, and biosphere.
Please vote my answer brainliest!
One characteristic of a lagoon is often: concentrated salt.