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What is the specific gravity of the following solution?
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Ch.1 Matter and Measurements
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 1, Problema 32
Assume that you are delivering a solution sample from a pipette. Figures (a) and (b) show the volume level before and after dispensing the sample, respectively. State the liquid level (in mL) before and after dispensing the sample, and calculate the volume of the sample.
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Guida verificata passo dopo passo1
Step 1: Observe the liquid level in figure (a), labeled 'START'. The liquid level is at 0.3 mL.
Step 2: Observe the liquid level in figure (b), labeled 'STOP'. The liquid level is at 0.2 mL.
Step 3: To calculate the volume of the sample dispensed, subtract the liquid level after dispensing (STOP) from the liquid level before dispensing (START). Use the formula: Volume dispensed = START volume - STOP volume.
Step 4: Substitute the observed values into the formula: Volume dispensed = 0.3 mL - 0.2 mL.
Step 5: Perform the subtraction to determine the volume of the sample dispensed. The result will be the volume in mL.
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Graduated Cylinder Measurement
Graduated cylinders are used to measure the volume of liquids accurately. The scale on the cylinder indicates the volume at various levels, typically in milliliters (mL). Understanding how to read these measurements is crucial for determining the liquid levels before and after dispensing a sample.
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Volume Calculation
Volume calculation involves determining the difference in liquid levels before and after dispensing a sample. This is done by subtracting the final volume from the initial volume, providing the volume of the liquid dispensed. Accurate calculations are essential for precise scientific measurements.
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Pipetting Technique
Pipetting is a technique used to transfer a specific volume of liquid from one container to another. Proper pipetting technique ensures that the correct volume is dispensed, which is critical in experiments and laboratory settings. Understanding how to use a pipette effectively is fundamental for accurate liquid handling.
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