Lab 1 Report 1 Essay

Submitted By qdsxl

Words: 464

Pages: 2

Open Document

learned the density of the warter .82is 49.56g

Experiment 1: Scientific Measurements

Chemistry 1250

Purpose:
Know the mass, volume, temperature and density.
Find the correct way to read scale values.
Find the mass, volume, temperature and density of water.

Procedure:
1. Use beaker collects 200 mL water.
2. Use thermometer to find the temperature of water.
3. Use Analytical balance finds the weight of 100 mL beaker.
4. Use 25-mL buret collect 5 mL, 10 mL, 15 mL, and 20 mL water. And use analytical balance find the weight of these four different samples.
5. Use Graduated cylinder collect 5 mL, 10 mL, 15 mL, and 20 mL water. And use analytical balance find the weight of these four different samples.
6. Use pipet collect 10 mL, 20 mL, 30 mL and 40 mL water. And use analytical balance find the weight of these four different samples.
7. Use beaker collect 5mL, 10mL, 15mL, and 20mL water. And use analytical balance find the weight of these four different samples.
8. Collect all the data, and fill in the table.
9. Use the table makes the graph.

Report sheets:
See attached report sheets

Sample Calculations:
Temperature ℉=(9℉/5℃)*℃+32℉
Density= mass/volume

Graph:
See attached graphs.

Report Question:

What is the weight of the 100 mL beaker?
After use the analytical balance, I find the weight of the 100 mL beaker is 49.56g.

What the temperature of the water use ℉,℃?
The temperature of the water is 23.82℃, also it mean 74.88℉.

Glassware
Mass of water (g)
Volume of water (mL)
Measured Density (g/mL)
Actual Density (g/mL)
Error
%Error
Buret
4.78
5.00
0.956
1.000
0.044
4.4%
Buret
9.72
10.00
0.972
1.000
0.028
2.8%
Buret
14.55
15.00
0.970
1.000
0.030
3.0%
Buret
19.53
20.00
0.976
1.000
0.024
2.4%
Average
---
---
0.974
1.000
0.026
2.6%
Graduated

Lab Report 1 Essay

with 200mL of cold water. The mixture was then filtered and the volume was measured at 200mL with no change. Date: April 1, 2014 Purpose: The purpose of this experiment was to introduce the chemistry student to basic laboratory procedures, demonstrate a working knowledge of the equipment and all safety features, and to perform simple lab procedures and compose a lab report at the conclusion of the exercise. Observations: The glass tubing was heated over an open flame for 28 seconds before it…

Words 391 - Pages 2

Lab Report 1 Essay

Dung Mai CH 337 – Winter 2015 Lab report #1 The Purity and Purification of Solid Melting Points. Abstract: The melting point method is used to find the melting range to determine the purity of biphenyl, naphthalene, and mixture compound of this two compound. With the same method, the unknown compound will be determined base on the melting range. According the giving data, the unknown D is Succinic Acid, which has melting point at 1880C, because the unknown has the closet melting range from 1810C…

Words 1375 - Pages 6

Lab Report 1 Essay

Liudmila Belonogov Lab Report I October 29, 2014 Ecology of the Mountain Tom Abstract: During the research we studied the ecosystem of the local forest. For the trees study we used a 100 m^2 plot and shrubs 50m^2 plot. We counted the numbers of trees and shrubs, and its relative density, abundance, importance value in the forest. For the study of the macroinvertebrates and its relative value in the ecosystem we used a plot with circular radius of 40cm. The importance of microorganism and microinvertebrates…

Words 1474 - Pages 6

LAB REPORT 1 Essay

is all the observations on all materials being used.. Long Short Length 10cm. 5cm. Mass 98g. 48g. Color Rusty copper Rusty copper Steel rods Plastic tubes long short Length 18cm. 10cm. Mass Color transparent transparent Procedure: 1) Gather all materials 2) Place styro-block on flat surface 3) Place nail in block (just right amount to hold itself) 4) Hold tube around nail 5) Place large steel rod above tube and drop it above nail 6) Repeat drop a number of times until nail is fully…

Words 533 - Pages 3

Lab 1 Report Essay

Nicholas Bollinger Unit 1 Case Lab IT Project Characteristics: 1. Difficulty: High, Medium or Low 2. Size: Large, Medium or Small 3. Skill: High, Medium or Low 4. Changes/Development: New Development, Upgrade of change of an existing software product. 5. Risk: High, Medium or Low 3 IT Categories: 1. Small IT projects 2. Medium IT projects 3. Large IT projects Small IT projects There must be less than two man years of development effort is needed A single development team of five people…

Words 434 - Pages 2

Essay on Lab Report 1

Microbiology Lab Safety Lab #1 1. Introduction In this lab, we focused on skills we will be using throughout this course. This lab specifically focused on hand hygiene. We will be dealing with microorganisms that humans tend to interact with, so it is important to learn safety in lab. Even though they are not harmful, safety is always an important skill to have in a lab setting, especially when we are working independently without guidance. 2. Objectives The objectives of this lab were to work with…

Words 1216 - Pages 5

1-Methylcyclohexene Lab Report

the experiment show that 1-methylcyclohexene is the major product of the reaction. This conclusion stems from an understanding that the area of the peaks corresponds to the percentage of the compound present in the mixture. The compound with the largest percentage is usually the most stable product. For E1 reactions, the most stable product is the product that has the greatest stabilization of the carbocation intermediate. Between 1-methycyclohexene and 3-methylcyclohexene, 1-methylcyclohexene stabilizes…

Words 454 - Pages 2

Lab Report 1 Essay

Experiment 1: Membrane Transport of Neutral Red Dye in Saccharomyces cerevisiae Abstract The purpose of the experiment was to determine which type of diffusion is used for membrane transportation in Saccharomyces cerevisiae. We took different concentrations of red dye to measure the absorbance rate the yeast cells took in. To compare our results, we had a controlled group of yeast growth medium with the concentrations of dye and we made a group of the same dye concentrations but with sodium azide…

Words 1939 - Pages 8

Essay on Lab Report 1

Titrations Cynthia-Grace Clarkson Date Completed: June 13, 2013 Date Submitted: June 17, 2013 Lab Partners: Matthew and Akshay Abstract In this experiment, I performed a series of steps in order to calculate the concentration of an HCl solution, the mass percent of OH in a solid, and the mass percentage of analytes such as lemonade powder. In order to do so, we completed steps of titrations, experiments that involve adding a solution from a buret into a specific volume of a solution…

Words 1553 - Pages 7

Lab Report 1 Essay

Christian Cledera April 28, 2014 How Sound Levels Attenuate with Distance Lab Report For our lab we had to how distance affects the loudness of saxophone used. A decibel is a unit used to measure the intensity of a sound. Researchers would be interested in this information. Especially doctors dealing with patients who have a loss of hearing. The way we had done this experiment is by setting 10 meters of tape, each person stands on a meter with their cellphone. With…

Words 355 - Pages 2