A chemist prepares a solution of potassium iodide (KI) by measuring out 67.7. mu mol of potassium iodide into a 400. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmo1L of the chemist's potassium iodide solution. Round your answer to 3 significant digits.

The concentration of potassium iodide in the solution is

Explanation:

To calculate the molarity of solution, we use the equation:

We are given:

Micro moles of potassium iodide =

Volume of solution = 400 m

Putting values in above equation, we get:

Hence, the concentration of potassium iodide in the solution is

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assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.