Substance density - Study guides, Class notes & Summaries

What does it mean that the heat of a reaction is an extensive property? 2. (3 points) Does the following reaction give off heat or absorb heat? Explain briefly. C D H = +263Kcal/mol 3. (4 points) In one experiment in the video, room temperature water was mixed with water at about 38 degrees. To what temperature (about) did the mixture of the two water samples come to after setting for a few minutes? Answer: 1. The heat depends on the amount of substance. If the amount of substance is d...

Different tissues that have signals that appear similar on an MR image are described as: A) hypointense B) hyperintense C) isointense D) isodense - Answer isointense in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top. this motion is called A) precession B) resonance C) frequency D) angular momentum - Answer precession magnetic resonance imaging is derived from the process known as: A) ma...

PTCB EXAM TEST BANK QUESTIONS AND ANSWERS LATEST WITH RATIONALE Multiple choice What is the route of administration for a prescription with the following directions: "i supp pr q 6 hr prn"? A. Orally B. Rectally C. Urethrally D. Vaginall {{Correct Ans- B. Rectally Rationale: "pr" means per rectum. What is the meaning of PDA? A. Personal digital aid B. Personal digital assistant C. Physician digital assistant D. Pharmaceutical data assistant {{Correct Ans- B. Personal dig...

CHEM 103 Module 1 to 6 Exam Questions and Answers (Portage Learning) Using the following information, do the conversions shown below, showing all work: 1 ft = 12 inches 1 pound = 16 oz 1 gallon = 4 quarts 1 mile = 5280 feet 1 ton = 2000 pounds 1 quart = 2 pints kilo (= 1000) milli (= 1/1000) centi (= 1/100) deci (= 1/10) 1. 24.6 grams = ? kg 2. 6.3 ft = ? inches 1. 24.6 grams x 1 kg / 1000 g = 0.0246 kg 2. 6.3 ft x 12 in / 1 ft = 75.6 inches please always use the correct units in your ...

ATI PN PHARMACOLOGY PROCTORED EXAM A nurse is administering subcutaneous heparin to a client who is at risk for deep vein thrombosis. Which of the following actions should the nurse take? 1. Administer the medication into the client's abdomen. 2. Inject the medication into a muscle. 3. Massage the site after administering the medication. 4. Use a 22-gauge needle to administer the medication. A nurse is providing teaching to a client who has a urinary tract infection and new ...

What are the 5 steps of the nursing process & an example of each? - answers Assessment - Collecting subjective & objective data from the patient Diagnosis -Data is collected & analyzed in order to make a nursing judgment Planning - Nurse decides the best plan while considering data Implementation -Carrying out the plan Evaluation -Determining whether plan was successful & what can be improved Write an example of an initial comprehensive assessment -ongoing/partial assessment - focused a...

ASPE CPD Study Questions AH Latest Version Graded A+ What is specific gravity in relation to water? Specific gravity is a dimensionless number that compares the density of a substance to the density of water, helping to determine how heavy a substance is relative to water. How is specific gravity measured? Specific gravity is measured using a hydrometer, which floats in a liquid, providing a reading based on how deep it sinks. Why is specific gravity important in water quality te...

The standard reduction potential for the half-reaction HClO(aq) + H+(aq) + e- → ½Cl2(g) + H2O(l) is 1.61 V. What is the standard reduction potential for the following half-reaction? 2HClO(aq) + 2H+(aq) + 2e- → Cl2(g) + 2H2O(l) - Ans: 1.61 V Given that Eºcell = 0.60 V for a voltaic cell in which the following redox reaction takes place 2Rh(s) + 3Cl2(g) → 2Rh3+(aq) + 6Cl-(aq) and that the standard reduction potential for the half-reaction Cl2(g) + 2e- → 2Cl-(aq) is 1.36 V, calcul...

Continuing education unit - Answer- approximately one hour of study credit used to make up the total of 16 CEUs required for ornamental and turf pest control applicator recertification Florida Department of Agriculture and Consumer Services (FDACS) - Answer- the agency that administers the Florida Pesticide Law (Chapter 487) Florida Pesticide Law - Answer- The law that governs the use of pesticides in Florida, which is administered by the Florida Department of Agricultural and Consumer Ser...

Which of these reduces friction? Car breaks Tired tread Ball bearings Sandpaper - ball bearings If you place bean seeds between moist paper towels and watch the stem leaves appear you will see a demonstration of? Transpiration Germination Fertilization Pollination - germination Any astronomical body that revolves around a larger body is called? A nova A comet A satellite An asteroid A meteoroid - satellite In chemistry, to be classified as an organic substance, a substance must c...