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.
Zinc sulfide reacts with oxygen according to the following reaction:
2 ZnS (s) + 3 O2 (g) --> 2 ZnO (s) + 2 SO2 (g)
A reaction mixture initially contains 4.21 moles of ZnS and 6.8 moles of O2.
a. What is the limiting reactant?
b. How many moles of ZnO could theoretically be produced from this amount of limiting reactant?
c. Once the reaction is complete, how many moles of excess reactant remains?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
