An injection of 4 mg of valium has been prescribed for a patient suffering from muscle spasms. a bottle of valium labeled 5 mg/ml is on hand. how many ml should be injected?

Given the patient is suffering from muscle spasms.

The mass of Valium to be injected to the patient suffering from muscle spasms =4 mg

Given the bottle of valium with a density of 5 mg/mL

We know that, Density =

Volume =

Mass = 4 mg Valium

Density = 5

Calculating the volume from mass and density:

Volume of valium to be injected=0.8mL

Therefore, a volume of 0.8 mL of valium is to be injected to the patient.

  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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