Please help! It is due in an hour and I'm solving other problems in this assignment, but just can't get this one. If you use a volumetric pipet to transfer 10 mL of a 0.401 M stock solution into a 50 mL volumetric flask and then filled the flask to the calibration mark with deionized water, what would the concentration (in M) of the new solution be? Filling in a dilution diagram like the one below, may help you with this calculation.

Edit: 0.0802 M
Explanation: C1V1 = C2V2
We need to solve for C2 so set the formula to fit that.
C2 = C1V1/V2
C2 = (10 mL • 0.401 M)/ 50 mL = 0.0802M

  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-

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