Problems from Chapter 3 CCC - Dr. Feudale 8. To find the number of waters of hydration in hydrated copper (II) sulfate, CUSO4 XH2O. 1.023 g of the hydrated solid was heated to remove all of the water. After thorough heating, the anhydrous copper (II) sulfate weighed 0.654 g. Determine the value of x. 9. A 0.1342-gram sample of an unknown compound composed of C, H, and O was burned in air, producing 0.240 g of CO2 and 0.0982 g of H20. If the molar mass of the compound is 222.4 g/mole, determine its empirical and molecular formulas.
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.
How do we find x? I kept getting 2 moles of H and 1 mole O but I know x is supposed to equal 2, so how do we get this?
Answer:-
These questions are answered by using the simple concept of determination of molecular formula using the mole ratio of the given elements and compounds.
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