19) what is the molarity of a koh solution if 200 ml of the solution contains 0.6 moles koh?

3M

Explanation: Molarity : It is defined as the number of moles of solute present in one liter of solution.

Formula used :

where,

n = moles of solute = 0.6 moles

= volume of solution in ml= 200 ml

Now put all the given values in the formula of molarity, we get

Therefore, the molarity of solution will be 3M.

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a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.