100 mL of 2 M acid is diluted with water to 250 mL. What is the new molarity?
Answer and explanation
Correct answer: C. 0.8 M
- Step 1: Moles stay the same: , so M. Answer: 0.8 M. Why not the others: 5 M, 0.5 M and 1 M don't fit.
Practise more Physics and Chemistry Problems.
Free questions with an explanation for every one, and full timed UNI Admission Exam (Peru) mock tests.
More Physics and Chemistry Problems questions
- A car starts from rest and accelerates uniformly at for s. Its final speed is:
- A stone is dropped from a height of m. Taking and ignoring air, how long does it take to land?
- A ball is thrown horizontally at from a cliff m high (). How far from the base of the cliff do…
- A kg block is pulled by a N force to the right and a N force to the left. Its acceleration is:
- A block slides down a frictionless incline of . With , its acceleration is:
- A kg object moving at m/s is stopped by friction over m. The average friction force is: