What is the percent by volume of ethanol (C2H6O) in the final solution when 135mL of ethanol is diluted to a volume of 345mL with water? The total volume of the solution is 345 mL.

Which of the following might a chemist choose to study? a. glacier movement in alaska b. better ways to recycle plastics c. the effects of hurricanes on turtle populations d. the vibrations in bridges caused by big trucks

What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17

Adilute aqueous potassium nitrate solution is