Lab 3 Results 092921

I need help calculating the Molarity of the solution in the first picture please!!!

Please send me the question in 20 minutes it's very urgent plz

Pls help ASAP. Pls show all work and calculations.

< Report - Gramma NGLSync X OWLv2 | X Cengage + entActivity.do?locator-assignment-take 0 How many amperes are required to deposit 0.291 grams of magnesium metal in 213 seconds, from a solution that contains Mg²+ ions. 2+ A Submit Answer Retry Entire Group 9 more group attempts remaining a 68°F Et OFE 1:37 PM 5/27/2022

Do not give handwriting solution.

Given the Ksp for Ag2CrO4 is equal to 1.20 x 10-12, calculate the percent error in your experimentally determined value for average Ksp (this will be an extremely large percentage – think about why).

What concentration of AgNO3 (in ppb) is present in 7.1 X 10 M AgNO3 ? The molar mass of AgNO3 is 170 g/mol. Make sure you show the work to receive full credit. Edit View Insert Format Tools Table 12pt ✓ Paragraph BIUAv2v T²V هم 阎圃v|

A 1.95 x 10^-7 B 1.82 x 10^-5 C 1.82 x 10^-7 D 1.95 x 10^-5

I need help with question 5? I am confused on question 5a and what it means?

PLEASE Answer within 20-30 minutes. Thank you!

Correct answers are given in second picture!!! Please show me how to get them and explain!

Hello! Could you please answer this with one long dimentional analysis like I am supposed to do it? Thank you!

You work in a research organization that is looking for markers of various diseases that can be used as a diagnostic for the disease. It has been reported in the past that high levels of Cu are found in the sweat of people with cystic fibrosis. One of the research projects is focused on looking for high levels of Cu in samples that can be obtained non-invasively such as saliva, sweat, hair, nails, etc. The lab will analyze large samples for Cu. What instrument would you recommend purchasing to support this work, Atomic absorption spectrophotometer or an inductively coupled plasma atomic spectrophotometer? Explain the basis for your decision.

Need help filling this out. It is the Data Sheet for Ch. 2 Qualitative Analysis. Very much appreciated!

The analysis of DDT in a water sample resulted to a peak area of 0.250. Calibration curve is NOT prepared since standard solutions are limited. Therefore, a 1.00 ppm DDT standard is spiked in the same water sample. This resulted to an increase in peak area. The peak area of the spiked sample is now 0.315. What is the DDT concentration in the water sample? 3.75 ppm 3.85 ppm 5.09 ppm 1.43 ppm 1.65 ppm Music off Zoom in

Table 3 - Equilibrium Test Solutions Volume (mL) 2.00 x 103 M Volume (mL) 2.00 x 10-3 M Initial [Fe*] Initial [SCN] Test Volume (mL) 0.1 Μ ΗΝΟ, Tube Fe(NO:); NaSCN M M 1 5.00 5.00 5.00 1.00 4.00 3 5.00 2.00 3.00 4 5.00 3.00 2.00 5 5.00 4.00 1.00 5.00 5.000 Find the concentrations of Fe3+ and SCN- 2.

Please put the data in tabular format please Please please please answer as fast as possible

00 mL of a diprotic acid primary standard solution was accurately prepared to a concentration of 0.1431 M.  Three samples of this primary standard solution were used as samples in a titration to standardize an aqueous solution of sodium hydroxide, NaOH, which would be used as a titrant. Using the following table of data for the titration of the primary standard acid with NaOH, calculate the average concentration of NaOH.   Trial # Volume of primary standard Initial titrant volume Final titrant volume 1 10.00 mL 8.21 mL 27.22 mL 2 10.00 mL 27.22 mL 46.23 mL 3 10.00 mL 30.28 mL 49.29 mL        0.1506 M      0.0753 M      0.0376 M      0.1431 M      0.0526 M

i) How many moles of hydrochloric acid were there in the volume of acid added in the titration? ii) How many moles of calcium hydroxide were there in the 25 cm sample of solution that the student used in the titration? iii) What was the concentration of the calcium hydroxide solution in mol/dm?

Chem101 A Postlab Quiz 11: BIOL 122 - Intr X + A app.101edu.co Apps y Canvas 5 MYACU 101 Chem101 Q Quizlet O Khan Academy YouTube E Google Docs Question 2 of 5 What volume (in mL) of 0.2600 M HBr is required to neutralize 40.00 mL of 0.8000M NAOH? +/ MacBook Pro esc 888 ►II » # 24 & 4. 7 8. Q W E T Y U

A water sample was analyzed for iron content using the iron-phenanthroline method. Using the set of data from Question 15 (as presented below), Reagent Blank Absorbance Absorbance (au) Reagent Blank Absorbance 0.003 Concentration of Stock Solution: 10 ppm Volume of Stock Solution (mL) Total Volume of Standard Solution (mL) 0.50 10.00 1.00 10.00 2.00 10.00 3.00 10.00 4.00 10.00 5.00 10.00 Volume of Trial Unknown Solution (mL) 1 5.00 2 5.00 3 5.00 find the true concentration of Fe2+ of the original sample. A) 5.12 ppm B) 2.56 ppm 2.52 ppm D) 5.05 ppm Concentration of Standard Solution (ppm) Total Volume of Unknown Solution (mL) 10.00 10.00 10.00 Absorbance (au) 0.012 0.132 0.267 0.349 0.428 0.560 Absorbance (au) 0.289 0.296 0.281

please help me find concentration   Concentration of TZ stock solution (μMμM) 42.06

Pre Lab Questions: (Each answer is to be written as a complete sentence) What is the reason for washing the precipitate with water in Step 9? Define precipitate. Define filtrate. In Step 2, what is the purpose for rinsing the stirring rod? read the Procedure to answer the questions  Using a balance, mass between 1.50 – 2.00 grams of sodium carbonate in a pre-massed 150mL beaker. Add 20 mL of distilled water and stir thoroughly to make sure all the crystals are dissolved. Rinse the stirring rod with a little distilled water after stirring. Using a balance, mass between 1.50 – 2.00 grams of calcium chloride dihydrate in a pre-massed 50 mL beaker. Repeat Step 2 for the solution in the 50 mL beaker. Pour the calcium chloride solution into the 150mL beaker containing the sodium carbonate solution and stir. Mass a piece of filter paper. Fold the filter paper and place it into the funnel. Wet it with a little distilled water to ensure that it is stuck to the sides of the funnel. Slowly…

What is the molarity of the three solutions ?