Chemistry, 26.11.2019 21:31 phillipmccormick

It was decided to analyze a waste solution that contains an unknown concentration of mn2+ ions using colorimetry. a strong oxidizing agent was added to a 7.80 ml sample of the solution to convert the colorless manganese ions into purple permanganate ions. after the reaction is complete, the solution was diluted to 250.0 ml and analyzed in a colorimeter. the percent transmittance of the solution was determined to be 52.8%. also a calibration curve was prepared by using a series of solutions with known concentrations of permanganate and the equation for the best fit line was found. y =1920- x +0.026 what is the absorbance of the permanganate in the diluted absorbance = waste solution? what is the concentration of the permanganate in the diluted concentration of the permanganate = м waste solution? what is the concentration of the mn2+ ions in the original concentration of the mn2+ ions = м waste solution?

Answers: 3

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 14:30

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o

Answers: 1

Answer

Chemistry, 23.06.2019 02:00

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box

Answers: 2

Answer

Chemistry, 23.06.2019 03:00

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative

Answers: 3

Answer

Chemistry, 23.06.2019 04:31

Which molecules are more strongly attracted to one another -c3h8o molecules that make up liquid rubbing alcohol or ch4 molecules that make up methane gas

Answers: 3

Answer

You know the right answer?

It was decided to analyze a waste solution that contains an unknown concentration of mn2+ ions using...

Questions