Balancing Equations and stoichiometry Flashcards
1
Q
What does the law of conservation of matter say?
A
According to the law of conservation of matter, nothing can be created or destroyed; it
can only be transferred or transformed.
2
Q
The decomposition of 10 g of copper oxide is represented by the following equation:
2 CuO 2 Cu + O 2
If you obtain 8 g of copper, what amount of oxygen was released?
A
10-8= 2g
3
Q
what is stoichiometry?
A
Stoichiometry is the study of the quantities of reactants required for chemical reactions
to occur and the quantities of products that are thus formed. Balancing equations using moles
allows scientists (i.e. pharmacists) to determine the precise quantities of substances involved in
a chemical equation.
