Blood Typing Worksheet

1. Would you say that indicator tests are qualitative or quantitative? Explain your answer. 2. a. How does the Benedict test detect monosaccharides? (be specific!) b. Why can't the Benedict's test easily detect the sugar units of a starch? How does the Iodine test detect starch? (be specific!) b. Why can't the sugar units of a monosaccharide solution be detected with Iodine? (hint: "because it's not designed to" is not the answer I'm looking for!) 3. а. 4. a. What was different about the two protein solutions? b. How does the Biuret indicator detect proteins (and thus only one of the protein solutions)?

I need help please with question 1

What is the analysis and conclusion? in the picture.

researchers working in a chemistry lab were examined anatomical structures of the brain using concentrated formaldehyde solutions. Once their studies concluded there remained 1.5 gallons of the substance and the researcher decided to pour this down the drain. In this case, they directly violet regulations put in place by which office?1. Office of research integrity 2. Institutional animal care and use committee3. Occupational safety and health administration 4. Institutional review board

How does the analyzed vinegar sample conform with the FDA standards?

Part B: Miscibility of liquids 1. Place 10 drops of propan-2-ol into each of two DRY semi-micro test tubes. 2. Add 10 drops of water to one test tube and 10 drops of cyclohexane to the other test tube, shake and observe whether the two liquids in each test tube are miscible. Record your results then discard the contents of the test tubes into the organic waste container. 3. Place 10 drops of water in a clean semi–micro test tube and add 10 drops of cyclohexane to it. Record whether the two liquids are miscible. If two layers form (i.e. the liquids are immiscible) add a drop of blue food dye to the mixture and shake, then allow the two layers to reform. Based on your observation, decide whether the food dye is more soluble in water or cyclohexane and then discard the mixture into the non–halogenated waste container. Record whether the combinations of liquids shown below are miscible. Water Cyclohexane Propan-2-ol Cyclohexane

5. What pressure is always negative and helps to keep the lungs inflated? pressure 6. a. If transpulmonary pressure equals zero, what will happen to the lungs? b. This is known as a/an 7. a. When the bronchiole constricts, what will happen to resistance? b. To air flow? (use arrows)

write an equation for this lab and explain the observations that would occur: measure out 10 mL portion of 10% sodium sulphate into a clean test tube. Add 8 drops of 50% sulphuric acid and swirl. Count the number of drops (swirl after each drop) of 30% calcium chloride needed to produce a precipitate of calcium suplhate.

Which method would help Oliver to dissolve sugar in his tea faster? • letting the tea cool down before adding the sugar • using a sugar cube instead of granulated sugar • letting the sugar sit in the tea •

Nina, Roland, and Odi tried to do a recrystallization technique to purify a crude sample of benzoic acid. However, their instructor, George, pointed out some things about their technique. Roland forgot to add charcoal to the crude sample. Nina put the hot sample in the ice bath immediately. Odi used a long-stemmed funnel. Who among the students will achieve the highest purity?   a. None of the above b. Nina c. Odi d. Roland   Explain why. Thank you!

How do you know if your analyzed vinegar sample conform with the FDA standards?

3. What is the major obstacle that fractional distillation overcomes? 1 1° in422 male distillatio

Please type answer note write by hend.

Hello I am new to a research lab and we are working on conversions can someone help me with this problem on this worksheet I am confused so if you could dumb it down for me please.

Polarity and Solubility Predictions Directions: Show your molecule below. Circle or highlight all polar portions of the how molecule. Make a reasonable prediction about whether your molecule will be soluble in water or not and explain your reasoning. If your molecule seems to be borderline in polarity, making it difficult to predict solubility, explain your reasoning and the difficulty involved. Find a source (Merck Index, PDR, etc.) that discusses the water-solubility of your drug. Compare your predictions with the information you find on the water-solubility of your drug and comment on any discrepancies. Calculate how vol) solution of mL of

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Why is the glucose assay one of the most common analytical test performed in clinical chemistry.

AP Question // Q 5) Using the graph below, find the slope (and its unit). What letter(s) the Beer's law does the slope represent? 0.500 (0.100, 0.485) 0.400- (0.075, 0.364) 0.300- (0.055, 0.243) 0.200- 0.100- (0.025, 0.125) 0.050 0.100 Concentration (M) AP Question // Q 6) Write a balanced net ionic equation for the reaction between barium nitrate and copper(II) sulfate. Q 7) If the mass of barium sulfate is 0.372 g, find the number of the moles. Questions 8- 9 refer to the choices below. A. Chromatography B. Crystallization C. Fractional distillation D. Filtration Absorbance

What effect did high and low temperatures have on enzyme activity? Why?

Learning Task 1. Test for Carbohydrates We can detect the presence of carbohydrates in food samples based on color reactions after adding a certain chemical. lodine solution or tincture of iodine and Benedict's solution are used to food samples to test the presence of carbohydrates. Lugol's iodine solution or tincture of iodine changes from yelow to blue or black in the presence of starch. It the substance that you test contains sugar, Benedict's solution will change color. Positive Test: Benedict's solution changes from blue to green (very small amount of reducing sugar), to yellow (higher amount af reducing sugar) to orange or brick red (highest amount of reducing sugar). The change in color is due to the formation of the brick red precipitate, Cu20. Procedure: 1. This activity will be using given data as assumed results from the activity. 2. The tables below contain tood samples that after a certain chemical was added into it, the color of each sample changed (color reacton). 3.…

Please answer the rest. This is using up another one of my questions

TRUE OR FALSE 4. A litmus paper test for the acidity or basicity of a solution is done by dipping a stirring rod into the solution and using this to wet the litmus paper. __________ 5. Water or glycerol should be applied to the glass tubing and the hole in the rubber stopper before inserting the glass tubing.

What properties does recrystallization rely on to be an effective method of purification? A) The product is souble in hot solvent. B) The product is insoluble in cold solvent. C) The impurities are soluble in hot solvent. D) The impurities are soluble in cold solvent. E) The product is insoluble in hot solvent. F) The impurities are insoluble in cold solvent.     A, B, C, and D     A, B, C, and F     B, C, D, and E

REAGENT AMOUNTS In this section, you must record the actual amounts and volumes of reagens use in the lab. 090 ml Volume of methyl benzoate: mmol Equivalent to a molar amount of: 30 1.0 ml Volume of concentrated Nitric acid (16 M = 16 mol/L): Equivalent to a molar amount of : mmol Volume of concentrated Sulfurie acid acid (18 M = 18 mol/L): 3.0 ml Equivalent to a molar amount of: mmol 0.90 mL IL =0.0009 L lo0omL