1.2.3. Forensic Toxicology (1).pdf

Based on the data in the table, summarize what was shown here, what did they do here? And was this lab successful or not?     Substance  Physical Appearance Odor Density (g/mL) Reacts with NaHCO3 1.      Benzaldehyde  Clear liquid or almost pale yellow It smelled like almonds  1.00 No, significant reaction 2.      MTBE Colorless  Fruity smell to it 1.236 -1.247  No chemical reaction occurred 3.      Urea White solid  A very strong order of ammonia  0.791 No reaction occurred   4.       Acetone Colorless Pungent odor like nail polish remover 1.335 No, did not react with sodium bicarbonate 5.      Glycerol Colorless N/O 1.044 No, it did not cause a reaction 6.      Citric Acid colorless then turns white with sodium bicarbonate added N/O 1.044 Yes, caused fizzy/bubbles to it.

The Covid-19 pandemic has many experts commenting on the science associated with the virus - origins, vaccines, monoclonal antibodies, masks, social distancing.  It is important to consider what the experts say, but to also evaluate their statements.  We will start with the scientific method.  I want you to outline the scientific method from what you have been taught in previous classes.  You can list steps, parts, process, short descriptions, whatever.  If not taught in previous classes, then you will make your best guess about it.

Scientists study the impact of changing only one component of a cancer treatment in a laboratory. Which of the following describes the study? controlled experiment observational study conceptual model computational study

Write the balanced equation for the neutralization of acid rain (assume HNO3 is dissolved in water) by limestone (calcium carbonate). Express your answer as a chemical equation. ΑΣφ ? DA chemical reaction does not occur for this question. Submit Request Answer Provide Feedback 76 tv

Carla is using a fertilizer that contains nitric acid. How is nitric acid classified? strong acid weak acid strong base weak base Save and Exit Next Mark this and return ContentViewers/AssessmentViewer/Activit.

II. b) What is the difference between liquid-liquid, solid-liquid and solid-phase extraction? Complete the table below and sort the following examples in the correct column: Steeping tea, washing an organic phase (workup), brewing beer, chemical desalting of crude oil, activated carbon sugar decolorization. liquid-liquid solid-liquid solid-phase Phase that contains analyte before extraction? Phase that contains analyte after extraction? Example(s)

Olympic athletes are tested to see whether or not they are using illegal performance-enhancing drugs. Suppose that urine samples are taken and analyzed, and the rate of false positive results is 1%. Suppose also that it is too expensive to refine the method to reduce the rate of false positive results.We certainly do not want to accuse innocent people of using illegal drugs. What can you do to reduce the rate of false accusations even though the test always has a false positive rate of 1%?

Carbon dioxide concentration (parts per million) Examine the graph and answer the following questions. Part A Atmospheric Carbon Dioxide What was the average rate of increase in carbon doxide concentration between 1900 and 19407 410 400 Express you answer in parts per million per year to two significant figures. 300 380 a ? 370 360 ppm/year 350 340 Submit Bequest Anawer 330 320 310 Part 8 Complete previous parts) 300 290 - 1860 1880 1900 1920 1940 1960 1980 2000 2020 Provide Feedback Next> Year

Strontium phosphate, Sr3(PO4)2Sr3​(PO4​)2​, dissociates when placed in water. This compound has a solubility of 0.112 mg/L in water at 20 °C.   Calculate the Ksp of Sr3(PO4)2Sr3​(PO4​)2​. Please write your answer using scientific notation according to the following format: 0.0010 would be writen as 1.0*10^-3.

Write balanced equations for the reaction of Al(OH)g with stomach acid (HCI). Express your answer as a chemical equation. Identify all of the phases in your answer. | ΑΣφ ? Submit Request Answer Part B Write balanced equations for the reaction of Mg(OH), with stomach acid (HCI). Express your answer as a chemical equation. Identify all of the phases in your answer.

Please don't copy I am completing an online lab so I will try to provide the needed information to solve. Please let me know if any information is missing. We started with 20 mL 1 M acetic acid ~ 0.020 L acetic acid in a flask. (Ka acetic acid = 1.8x10^-5; pKa = 4.7) (Kb ammonia = 1.8x10^-5; pKb = 4.7; Ka = 5.56x10^-10; pKa = 9.25) We titrated with 1 M Ammonia have to calculate the pH mathematically at different amounts of Ammonia added. Our Ammonia amounts are 8 mL, 16 mL, 20 mL, and 22 mL. We then have to find the percent difference of the online labs pH calculations. Online Lab's Values: 8 mL Ammonia - pH of 4.58 16 mL Ammonia - pH of 5.36 20 mL Ammonia - pH of 6.99 (equivalence point in the lab) 22 mL Ammonia - pH of 8.24 I would greatly appreciate if you could show for all 4 of the amounts of Ammonia added, and show how you did them. Thank you! Will gladly upvote if work is shown!

Describe the sources you should focus on when doing research to support your position.

I need help understanding how to do this, can you please show me how you get the CFU/mL

STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.