# Lab Notes - Lab 1- Measurement of Bulk Volume and...

This preview shows pages 1–2. Sign up to view the full content.

Lab 1- Measurement of Bulk Volume and Statistical Analysis 1. Precision- How closely to be repeated “reproducibility” 2. Accuracy- How closely to the answer “exactness” 3. Standard Deviation- shows the degree of “spread or scatter” of samples 4. Vernier caliper- accurately measures the length of an object. 5. 1 atm= 76 mm Hg = 14.7 psi/ [lb/in^2] How to do Lab 1. Know how to Measure on the Vernier Caliper 2. Measure bulk volume= 3.14 x D x D x L/4 3. Mean= Average 4. Standard Deviation Equation: 5. Temperature: a. K= C + 273.15 b. R= F + 459.67 6. Know Significant Figures Lab 2- Gauge Calibration and Statistical Analysis 1. Know how to find the straight-line fitting (linear/nonlinear regression)- a=y-mx 2. Correlation Coefficient (r) – Based on the trend line, a measure of match with the measured data is obtained by adding up errors or “residuals” given by Sr. 3. Standard Deviations Equation 4. Square of correlation of coefficient r^2 equation 5. Understand Sr. Concept Graphs How to do the Lab 1. Absolute pressure = gauge pressure + atmospheric pressure 2. P_true (y) = a + mP_measured (x)b 3. Measuring pressure 4. Find Residual, Sr= 5. Standard Deviation, S_(y/x) 6. Mean of Y 7. Total Sum of Squares, St 8. The square of the Correlation Coefficient (r^2) Lab 3- Specific Gravity and Density of Liquids Equipment for Specific Gravity and Density of Liquids Lab Pycnometer (From the Greek pukos meaning “density” also called pyknometer or “specific gravity bottle” ) - A flask with a close-fitting glass stopper with a small hole through it. - Measures volume density of a fluid to be calculated by measuring the weight - If density is known, measure weight volume Hydrometer - Directly measures liquid density by floating the hydrometer in the liquid - Normally a set of hydrometers to deal with a different range of densities Westphal Balance - Directly measures fluid density using plummet, fluid, and riders. -

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 10/25/2011 for the course ECON 2030 taught by Professor Russel during the Spring '11 term at LSU Health Sciences Center.

### Page1 / 4

Lab Notes - Lab 1- Measurement of Bulk Volume and...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online