A 20.06-mL sample of hydrochloric acid solution requires 25.00 mL of 0.149 M sodium hydroxide for complete neutralization. What is the concentration of the original hydrochloric acid solution?

The concentration of the original hydrochloric acid solution is - 0.1856 M

Explanation:

Lets calculate-:

Neutralization reaction follows dilute principle

    For titration between NaOH and HCl

Putting the given values ,

            = 0.1856 M

Hence , the concentration of hydrochloric acid solution is 0.1856 M.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer