You have a salt of the form where element X is a well-known, soft metal, grayish, with a unique oxidation number of +2 and common in living bones. For
On the other hand, element Y has a mass percentage of 19.97% in said salt.
to. Using this information, determine the identities of elements X and Y.
b. Write the electron configurations of each element, indicating whether it is
paramagnetic or diamagnetic.

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution

The appropriate concentration for an iodine sanitizer is