Feb 2024 Update: Pre-Lab Study Questions 1. What property of oil makes it float on water? 2. Why would heating the gas in

Question

Pre-Lab Study Questions 1. What property of oil makes it float on water? 2. Why would heating the gas in an air balloon make the balloon rise? 3. What is the difference between density and specific gavity? 4. How does a graph help us interpret scientific data? A. Density of a Solld (Use the "density of a solld demonstration" to collect data.) A.1 Mass of the solid A 2 Volume of the solid by displacement Initial w ater level (mL) Final water level with solid (mL) Volume of solid (mL) A 3 Calculating the density of the solid Show calculations Questions and Problems (Show complete setup) Q.1 An object made of aluminum has a mass of 8.37 g. When it was placed in a graduated cylinder containing 20.0 mL of water, the water level rose to 23.1 ml. Calculate the density and specific gravity of the object B. Density of a Liquid (Use the "Sugar-Water Experiment" to collect data) B.1 Volume of Liquid Type of liquid sugar water B.2 Mass of Liquid Mass of beaker Mass of beaker + liquid Mass of liquid B.3 Density of a Liquid Density Calculations for density) C. Specific Gravity C.l Specific gravity (Show calculations, calculated from B.3) Questions and Problems (Show complete setups) 02 What is the mass of a solution that has a density of 0.,775 g/mL and a volume of 50.0 ml? 03 What is the volume of a solution that has a specifie gravity of 1.2 and a mas of 185

Asked By ThunderStrike21 at 05 Feb 2024

Answered By Expert

Nelson

Expert · 1.5k answers · 1k people helped

a)The property of oil that allows it to float in water is it's DENSITY. Oil is less dense than water and dose not mix with water, allowing the oil to float on water.

b)As air is heated it expands and will become less dense than the cool surounding air that is more dense allowing the hot air to rise

c)The difference between density and specific gravity is that one is a ratio of the other, density is the measure of the amount of mass per volume.

Specific gravity is a comparison of the density of an object with the density of water (1.00 g/mL at 4 degrees celsius)

*** Specific gravity is a number with no units, the units of density canceled each other out.

density = mass of sub / volume of sub

Specific gravity = denisity of a sub(g/mL) / desnisy of water (1.00g/mL)

d) It allows you to see a change in the data which you can use to predict a trend or track other noteworthy details.

Graphs turn raw data into easy to understand pictures for quick examination

🧑‍🏫 More Questions

Plus x: A first function Assign y with 5 plus x. Ex: If x is 2, then y is 7. If x is 19, then y is 24. When done writing and testing your function, press "Submit for Assessment", which will automatically apply various test calls to your function Assessment Check if IncreaseValue(2) returns 7 Check if IncreaseValue (19) return 24

KNOWLEDGE DRILL 10-3: TRUE/FALSE ACTIVITY The following statements are are all false, Circle the one or two words that make the statement false and write the correct word(s) that would make the statement true in the space provided. 1. Microhematocrit tubes are often referred to as "bullets" because of their size and shape. 2. Warming a capillary puncture site can increase the blood flow up to 10 times. 3. Capillary mature is sometimes recommended when available veins are fragile or must be saved for the procedures such as a glucose tolerance test. 4. Except for POCT methods, blood specimens for glucose tests cannot be collected by capillary puncture 5. Microtubes for chemistry specimens are collected first in the order of draw for capillary puncture. 6. The CLSI-recommended site for capillary puncture on adults and children older than 1 year is the palmar surface of the distal or end segment of the middle or ring finger of the dominant hand. 7. The safest area for heel puncture is the medial or lateral palmar surface of the heel 8. Neonatal bilirubin specimens must be kept cool during transportation and handling 9. Phenylketonuria is a temporarily acquired disorder. 10. Blood spot circles for newborn screening tests are filled by applying a large drop of free-flowing blood to each side of the filter paper. 11. The recommended antiseptic for capillary specimen collection is povidone-iodine. 12. "Calcaneus" is the medical term for finger bone. 13. The capillary bed in the skin of a full-term newborn is richest in capillary loops below 1 mm deep. 14. Do not squeeze the site while collecting a capillary specimen as hemoconcentration can result. 15. Underfilling a microtube can result in microclots in the specimen. 208 Unit III Blood Collection Procedures SKILLS DRILL 10-4: HEELSTICK PROCEDURE RATIONALE (Textbook Procedure 10-2) Match the rationale summary from the following list with the heelstick procedure steps listed by placing the appropriate letter next to the step under Rationale Summary. A. Absorbs excess blood and helps stop bleeding B. An acceptable one is on the medial or lateral plantar surface of the heel C. Doing this in advance helps ensure everything is ready and within reach D. Encourages the blood flow without compromising specimen integrity E. Exposure to latex can trigger a life-threatening reaction in some individuals F Follow facility protocol before doing this G. Helps ensure correct specimen identification H. Helps prevent sudden unexpected movement by the patient I. Makes collection easier and reduces a tendency to squeeze the site J. Must be reviewed for completeness K. Necessary for proper additive function L. Necessary to protect specimen integrity M. Necessary to verify bleeding has stopped N. Placing it flat against the skin ensures good contact for the puncture O. Plays a major role in infection control P. Prevents contamination of the specimen with excess tissue fluid Q. Removes or inhibits skin flora that could cause infection R. The infant should be lying face up with the foot lower than the torso S. This is courteous and professional T. Vital to patient safety and meaningful test results Rationale Suzy Heelstick Procedure Step 1. Receive, review, and accession test request. 2. Approach. greet, and identify the patient. 3. Explain the procedure, and obtain consent 4. Verify collection requirements, and identify sensitivities and potential problems. 5. Sanitize hands, and put on gloves. be patient. ture site. Le site. Clean and air dry the site. 10. Prepare equipment. 11. Grasp the heel firmly, position the lancet, puncture the site, and discard the lancet. 12. Lower the heel and apply gentle pressure until a blood drop forms 13. Wipe away the first blood drop.

What is required to access Dynamic Study Modules? A current Mastering username and password Enrollment in a course that uses Mastering with Dynamic Study Modules Previously signing in from a desktop, if using DSM on the mobile app All of the above

Which of the following statements are true about the series ∑n=1∞2n+11 ? The integral ∫x=1+∞2x+1dx diverges, so the integral test says that the series diverges. limn→∞2n+11=0, so the n-th term test is inconclusive. limn→∞2n+11=0, so the n-th term test says that the series diverges. The integral ∫x=1+∞2x+1dx converges, so the integral test says that the series converges. limn→+∞1/n1/(2n+1)=21, so the limit test says that the series converges. limn→+∞1/n1/(2n+1)=21, so the limit comparison test says that the series diverges.

6. On the basis of the reactions observed in the six test tubes, explain why the position of hydrogen cannot be fixed exactly with respect to all of the other elements listed in the activity series in Question 5. 7. What additional test(s) would be needed to establish the exact position of hydrogen in the activity series of the elements listed in Question 5? 8. On the basis of the evidence developed in this experiment: (a) Would silver react with dilute sulfuric acid? Why or why not? (b) Would magnesium react with dilute sulfuric acid? Why or why not?

👉 Interested in exploring further?

Chrome Extension

1. Search answers from our 90+ million questions database.

2. Get instantly AI Solutions powered by most advanced models like GPT-4, Bard, Math GPT, etc.

3. Enjoy one-stop access to millions of textbook solutions.

4. Chat with 50+ AI study mates to get personalized course studies.

5. Ask your questions simply with texts or screenshots everywhere.

Get It

Compare

Legal