Will GIVE BRAINLIEST --A student makes a standard solution of potassium hydroxide by adding 14.555 g to 500.0 mL of water. Answer the following questions, being sure to include units and remember sig figs. Show your work. a. What is the concentration of this standard solution?

0.5188 M or 0.5188 mol/L

Explanation:

Concentration is calculated as molarity, which is the number of moles per litre.

***Molarity is represented by either "M" or "c" depending on your teacher. I will use "c".

The formula for molarity is:

n = moles (unit mol)

V = volume (unit L)

Find the molar mass (M) of potassium hydroxide.

Calculate the moles of potassium hydroxide.

Carry one insignificant figure (shown in brackets).

Convert the volume of water to litres.

Here, carrying an insignificant figure doesn't change the value.

Calculate the concentration.

        <= Keep an insignificant figure for rounding

             <= Rounded up

              <= You use the unit "M" instead of "mol/L"

The concentration of this standard solution is 0.5188 M.

the answer is 0.8m.

by: nicholas