A50.0 ml sample of 0.436 m nh4no3 is diluted with water to a total volume of 250.0 ml. what is the ammonium nitrate concentration in the resulting solution?

Answer : The concentration of the resulting solution will be 0.0872 moles.

Explanation: As the two volumes are given and one of the moles concentration needs to be found.

So, according to the formula :- 
 
And here if we consider as 0.436 moles and  as 50 mL then we need to find  as  is given as 250 mL.

So, by solving we get  = 0.0872 moles.

1. and 2. question: in which equation? or i don't understand you, 3. a), 4. c), 5. c), 6. b), 7. d), 8. d) if small number is underlined(behind symbol) , b) if big number is underlined(in front of symbol)9. what is underlined there? 10. c)