For #1, we can show conservation of mass stoichiometrically converting the starting amount of reactants into the final amount of products
For instance 2H2O2 —> 2H2O + O2
If we start with 70g H2O2,
our theoretical yield of H2O~ 37g
Our theoretical yield of O2~ 33g
So 70g = 37g + 33g
For #2, an Acid-base reaction always forms a salt and water. For instance,
HCl + NaOH —> H2O + NaCl
This is called neutralization and I would think that Chemical properties would be different, as well as the physical properties.
A compound or a mixture.
If it is two or more elements are mixed, it is a mixture. If two or more elements are chemically reacted, it is a compound ( example FeS)
Hope this helps.
A covalent bond is a bond between two non-metal atoms in which electrons are SHARED between the two bonded atoms. An example of this would be, the C-H bonds that are present in the molecule Methane (
). any further questions?
I say it is C: A quantum of light energy
<span>C represents the displacement ONLY if it is the VECTOR arrow from P to W.
Usually if the arrow on the diagram has JUST a letter listing, that letter stands for the SIZE or LENGTH of the VECTOR arrow. In order to have the letter represent the VECTOR, itself, it must have a symbol of a "half arrow" placed above it.</span>