Concept explainers
(a)
Interpretation:
The number of significant figures that the answer must have for the conversion of
Concept Introduction:
A general-problem solving method in which the units under consideration is associated with numbers and are used as a guide in setting up calculations is known as Dimensional analysis. The units are treated the way the numbers are treated in this method. Three steps has to be followed for the Dimensional analysis and they are,
- The known or given quantity has to be identified that includes both numerical and units. The unit of the new quantity that has to be determined.
- Multiply the known or given quantity by one or more required conversion factors so that the unwanted units are cancelled leaving the desired units only.
- The mathematical operation has to be performed as indicated by the conversion factor setup.
If an exact number is present in the conversion of one unit into another, then the answer obtained will have the same number of significant figures as the measurement. If an inexact number is present in the conversion means, then the answer obtained will have same number of significant figures as in measurements or least number of significant figures as in conversion factor.
(c)
Interpretation:
The number of significant figures that the answer must have for the conversion of
Concept Introduction:
A general-problem solving method in which the units under consideration is associated with numbers and are used as a guide in setting up calculations is known as Dimensional analysis. The units are treated the way the numbers are treated in this method. Three steps has to be followed for the Dimensional analysis and they are,
- The known or given quantity has to be identified that includes both numerical and units. The unit of the new quantity that has to be determined.
- Multiply the known or given quantity by one or more required conversion factors so that the unwanted units are cancelled leaving the desired units only.
- The mathematical operation has to be performed as indicated by the conversion factor setup.
If an exact number is present in the conversion of one unit into another, then the answer obtained will have the same number of significant figures as the measurement. If an inexact number is present in the conversion means, then the answer obtained will have same number of significant figures as in measurements or least number of significant figures as in conversion factor.
(b)
Interpretation:
The number of significant figures that the answer must have for the conversion of
Concept Introduction:
A general-problem solving method in which the units under consideration is associated with numbers and are used as a guide in setting up calculations is known as Dimensional analysis. The units are treated the way the numbers are treated in this method. Three steps has to be followed for the Dimensional analysis and they are,
- The known or given quantity has to be identified that includes both numerical and units. The unit of the new quantity that has to be determined.
- Multiply the known or given quantity by one or more required conversion factors so that the unwanted units are cancelled leaving the desired units only.
- The mathematical operation has to be performed as indicated by the conversion factor setup.
If an exact number is present in the conversion of one unit into another, then the answer obtained will have the same number of significant figures as the measurement. If an inexact number is present in the conversion means, then the answer obtained will have same number of significant figures as in measurements or least number of significant figures as in conversion factor.
(d)
Interpretation:
The number of significant figures that the answer must have for the conversion of
Concept Introduction:
A general-problem solving method in which the units under consideration is associated with numbers and are used as a guide in setting up calculations is known as Dimensional analysis. The units are treated the way the numbers are treated in this method. Three steps has to be followed for the Dimensional analysis and they are,
- The known or given quantity has to be identified that includes both numerical and units. The unit of the new quantity that has to be determined.
- Multiply the known or given quantity by one or more required conversion factors so that the unwanted units are cancelled leaving the desired units only.
- The mathematical operation has to be performed as indicated by the conversion factor setup.
If an exact number is present in the conversion of one unit into another, then the answer obtained will have the same number of significant figures as the measurement. If an inexact number is present in the conversion means, then the answer obtained will have same number of significant figures as in measurements or least number of significant figures as in conversion factor.
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- Using the following equalities and the relationships between atm and torr or mmHg you are required to know, convert 536 mmHg to Pa. Report your answer with the correct number of significant figures. Do not use scientific notation. 1.00 atm (exact) = 29.92 inHg = 101325 Pa = 101.325 kPa = 14.7 psi Paarrow_forwardConsider a pH titration curve at 298 K for 50 mL of 0.10 M hypobromous acid, HBrO (Ka = 2.8 x 10−9), titrated with 0.10 M KOH solution. a. What volume of KOH is needed to reach the half-equivalence point? b. Calculate the pH of the HBrO sample at the half-equivalence point. c. Calculate the equivalence point pH. d. Identify a satisfactory pH indicator for the equivalence point. The pH range of colour change is indicated in parentheses. A) Methyl orange (3.0 - 4.3) B) Bromocresol purple (5.0 - 6.5) C) Alizarin yellow R (10.0 - 12.0) D) Methyl red (4.2 - 6.2)arrow_forwardThe loading dose of indomethacin in neonates is 0.2 mg/kg of body weight by intravenous infusion. a. What would be the dose for a neonate weighing 6 lb 4 oz? b. How many milliliters of an injection containing 1 mg of indomethacin per 0.5 mL should be administered to obtain this dose?arrow_forward
- A patient needs to receive 1 L of 0.9% NaCl solution over 8 hours. You have an infusion pump that delivers fluids in mL/hour. a. How many mL of the solution will the patient receive per hour? b. If the IV tubing being used delivers 20 drops/mL, how many drops per minute should the IV be set to deliver?arrow_forwardFor 0.75mg/0.5mL pen injectors, if a Member’s prescription tells them to take 0.75mg once weekly, how many pens will they need per month, if there are 4 weeks in a month??arrow_forwardWhen determining CFUs for a dilution of the same sample at 10-2 and 10-3 which of the following results would seem the most accurate to you? Explain why in the space below. A. 110,000 CFU/mL for 10-2; and 140,000 CFU/mL 10-3 B. 110,000 CFU/mL for 10-2; and 14,000 CFU/mL 10-3 C. 10,000 CFU/mL for 10-2; and 140,000 CFU/mL 10-3 D. none of the abovearrow_forward
- The antibiotic A is administered as a 1.0 g IV-bolus to a 34 years old male subject. The following plasma concentration data were collected: Time (hr) Concentrations (mg/L) 0.2 21.51 0.5 17.18 1 12.26 1.5 8.88 2 6.63 3 4.08 4 2.78 8 1.02 12 0.45 24 0.04 Calculate the following parameters (use Excel and the curve stripping method): PARAMETER VALUE UNITS Elimination half-life (b) Elimination half-life (k10) Distribution rate constant V1 Vss Clearance AUCarrow_forwardAt 39.9ºC, a solution of ethanol (XetOH = 0.9006, P * etOH = 130.4 Torr) and isooctane (P * iso = 43.9 Torr) forms a vapor phase with YetOH = 0.6667. The total pressure is 185.9 a. Calculate the activity and the activity coefficient of each component.b. Calculate the total pressure the solution would have if it were ideal.c. Comparing the ideal pressure to the actual pressure, what does this indicate about the molecular interactions?arrow_forwardCalculate the hemoglobin concentration of an unknown sample given the following info: concentration of known = 12.5 g/dl; absorbance of unknown = 0.48; absorbance of known = 0.65 a. 16.9 g/dl b. 9.2 g/dl c. 8.7 g/dl d. 11.3 g/dl e. 10.4 g/dlarrow_forward
- What is the density of whole blood at STP? [A] 3.57 × 103 kg m-3 [B] 1.06 × 103 kg m-3 [C] 5.55 × 103 kg m-3 [D] 2arrow_forwardAs shown in the image below, 10 µl of a stock solution (tube #1) are serially diluted into 0.990 ml of buffer. a. What is the dilution factor for this serial dilution? b. If the concentration of the stock solution in tube #1 is 0.8 M, what is the concentration of the solution in tube #3? 10 ul 10 l 10 0.990 ml SM buffer 0.990 ml SM buffer 0.990 ml SM buffer Tube #1 tube #2 tube #3 tube #4 For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).arrow_forwardUsing the table above, make the following unit conversions. Determine this by moving the decimal point the appropriate number of places. 1. 25 μL mL 8. 8500 µL = 2. 3 L = µL 9. 64 TL = GL 3. 150 cL = dL 10. 120000 nL = µL 4. 5000 pL = nL 5. 75 L = kL 6. 800 nL = cL 7. 6 hL = ML In addition to being able to convert among different units of measurement, geneticists also need toarrow_forward
- Cardiopulmonary Anatomy & PhysiologyBiologyISBN:9781337794909Author:Des Jardins, Terry.Publisher:Cengage Learning,