Answer: Option (A) is the correct answer.
Explanation:
The name of
ion is hydroxide.
Name of
ion is phosphite.
Name of
ion is phosphate.
Name of
ion is ammonia.
Name of
ion is acetate.
Name of
ion is oxalate.
Thus, we can conclude that the symbols and names for the ions given correctly is OH-:hydroxide
The mass of piece of sterling silver jewelry is 33.24 g. It contains 92.5% silver Ag by mass. Since, sterling silver is an alloy of Ag-Cu thus, percentage of Cu will be:
% Cu=100-92.5=7.5%
Thus, mass of copper will be:

Molar mass of Cu is 63.546 g/mol, thus, number of moles of Cu can be calculated as follows:

Here, m is mass and M is molar mass.
Putting the values,

Now, in 1 mole of Cu there are
thus, in 0.03923 mol, number of Cu atoms will be:

Thus, number of atoms of Cu will be
.
Answer:
They share the same number of electrons in their valence subshells.
Explanation:
They have the same number of electrons on the outer shell.
Answer:
36
Explanation:
products and reactants have to be equal
Answer: B. Unsaturated
Explanation: in a saturated/super saturated solution, more solute will not be able to dissolve.