Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 521 g of NaOH(s) per liter of solution. Calculate the molarity of this saturated NaOH(aq) solution.

The molarity of this solution is approximately .

Explanation:

The molarity of a substance gives its quantity (in number of moles) in each liter of the solution.

According to the question, there are of in each liter of this solution. The goal is to find the number of moles of formula units in that

contains three elements: Na, O, and H. Look up a modern periodic table for the relative atomic mass of each element:

Calculate the formula mass of .

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That's the mass of each mole of formula units. Calculate the number of moles of formula units in that of

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Apply the equation to find the molar concentration of this solution. In this equation, is the number of moles of the solute, and is the volume of the solution.

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  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-

give me abc and i will get it for u.