Why is it important to be able to calculate an empirical formula from experimental data? A. A chemist uses this information to analyze an unknown compound to determine which elements the compound contains. B. An empirical formula provides the molecular mass of the compound. C. This information allows chemists to determine the relative masses of the elements in an unknown compound. D. The empirical formula is needed to understand the physical properties of the compound.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
| A. A chemist uses this information to analyze an unknown compound to determine which elements the compound contains. |
| B. An empirical formula provides the molecular mass of the compound. |
| C. This information allows chemists to determine the relative masses of the elements in an unknown compound. |
| D. The empirical formula is needed to understand the physical properties of the compound. |
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