If we add 22.5 g of HCl to 45.8 g of water, what is the percent by mass of HCl in the solution?

Explanation:

Hello there!

In this case, since the percent by mass of a solute in a solution is computed via the following division:

Next, given the mass of HCl and that of water, we plug them in to obtain:

Best regards!

petroleum? coal maybe?

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-