This photo shows the results of the paper chromatography 3 starting line at the bottom up to the center of each outlined spot. The final mobile phase position is marked by the horizontal line near the top of the paper. The distances should be recorded in cm.

I have set up my spreadsheet and was able to reproduce the result with a pKa of 4.64. TRUE OR FALSE

Directions: (1) Determine the total volume of the standards by using a formula in the appropriate boxes (your instructor will help you with this). (2) Determine the concentration of Cu2+ in each standard, also using a formula in the appropriate cells. (3) Plot the absorbance as a function of Cu2+ concentration. Determine the equation for the best-fit line. 1.0 M ethylenediamine (mL) concentration Cu2+ absorbance (AU) at 550 nm 0.01 M CuSO4 5H2O H2O total volume stock Cu2+ standard (mL) (mL) (mL) (units) concentration (M) 1 0.50 0.00 9.50 0.025 0.01 2 0.50 0.50 9.00 0.031 0.01 3 0.50 1.00 8.50 0.048 0.01 4 0.50 2.00 7.50 0.153 0.01 5 0.50 3.00 6.50 0.223 0.01 0.50 4.00 5.50 0.307 0.01 7 0.50 5.00 4.50 0.384 0.01

ers is or h of Part B using a control serum: 2. The following are the results of a series of bicarbonate determinations (mmol/L) run in September Calculate the: a) mean b) median 27, 25, 25, 25, 24, 24, 26, 25, 24, 25 c) mode 25 37.5? 25 d) standard deviation 24 ° ( ! ! ! ! / SY Frrrrrr gr d d 24 -24 danmun son -25 -27 25+25 format. } 251 २ 1 rithin than er the + S-SUM Rnd (-) S-VAR 2 Ran# X! d/c a b/c x" STO RCL ENG SHIF 0999 8 x10x

urgent please

Q 6 please

Question 1 of 20 A barrel of crude oil has a volume of 42 gallons, only approximately 45% of which is processed into gasoline. If your car achieves 32 mi/gal, and you drive 36,000 miles in one year, how many barrels of crude oil are required to run your car for a year? Tap here or pull up for additional resources

To determine the organic material in a dried lake bed, the percent carbon by mass is measured at two different locations. To compare the means of the two different locations, it must first be determined whether the standard deviations of the two locations are different. Location 1 Standard deviation = 0.050 Location 2 standard deviation = 0.34 a) What is the calculated ? value for comparing the standard deviations? Fcalc = __________________

this is analytical chemistry i need full solution thanks

STARTING AMOUNT esc Tap here or pull up for additional resources ! 1 Q A X * 2 30² F2 W S # 3 80 F3 E D $ 4 (1000)¹ 0.01 100 Q F4 R ADD FACTOR * ( ) FL % 5 J F5 T m³ Convert 7.6 cm³ to m³ (0.1)* (0.01) 1000 (100)³ 7.6 x 10-4 G Question 25 of 31 ^ 6 cm³ F6 Y - ANSWER 0.076 m & 7 H (1)³ 7.6 cm K F7 * 00 0.1 7.6 x 10⁰ 8 RESET J 12 DII FB 1 1 ( 9 K F9 ) O O 4 F10 L P