Place a 2 in front of the HCl.
This is because the product is yielded to be both H2 and Cl2, diatomic elements. In the reactants side, HCl has no coefficient, but by adding 2, the equation will become balanced.
Hope this helps!
the known density of the liquid is
the density of a liquid
Thus, experimental error of 0.0108 g /mL is present.
Thus, Percentage error of 7.31 % is present.
The method of determining the most common isotope of lead is by determining the average atomic mass. The formula for determining the average atomic mass is:
Substituting the values in the formula:
The most common isotope of lead is:
Lead - 207.22 amu
The atomic symbol of lead is . The atomic number of is 82.
So, the the most common isotope of lead can be written as:
and Lead - 207.22 amu.
I think metal K+ produces the light with the highest energy level.