<center><b>Mass‚ Volume‚ and Density Lab</b></center> <br>The purpose of this lab was is to find the mass and volume of an object. Then to find the density of the object using the measurements of the mass and volume. <br> <br><b>Equipment:</b> <br>scale <br>graduated cylinder <br> <br><b>Hazards:</b> <br>dropping object into graduated cylinder too fast may cause it to break <br> <br><b>Procedure:</b> <br>First get out the equipment that will be needed. Make sure to have about 5 objects that can fit
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Abstract The purpose of this experiment was to identify whether density is an extensive or intensive physical property. By using water displacement‚ the volumes of the paper clip samples were measured and the masses were obtained by using an electronic balance. Each mass and volume was unique to their sample so by using their values‚ density was used to identify substances in the lab. After conducting the experiment‚ the results showed that there was a positive slope between the different paper
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CHM 3120L ANALYTICAL CHEMISTRY I LABORATORY REPORT EXPERIMENT: SPECTROPHOTOMETRIC DETERMINATION OF IRON IN DRINKING WATER Name: Steven Adrien Section: 3 Date Experiment Completed: Wednesday‚ July 17‚ 2013 1. Complete the following table Fe(II) stock solution | mass‚ g | 0.1756 | volume‚ mL | 500.0 | MW(Fe(NH4)2(SO4)2 x 6H2O)‚ g/mol | 392.14 | AW(Fe)‚ g/mol | 55.85 | conc. Fe(II)‚ ppm | 50.0 | Use Equation Editor to show how you calculated the concentration of Fe(II)
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changes in temperature. The changes in temperature were to be used to find the amount of heat released or absorbed. EXPERIMENTAL Reference """""""""""your website with your information""""""" RESULTS Calculation Calculation for determination of q: q = ms∆T Hess’s Law-type calculation ΔH = ΔHproducts – ΔHreactants J = g x [ J / ( g x ° C ) ] x ° C Calculation for Heat Change q=60g(160g*4.4c) =(60g*4.18J)/4.4j =1104.56 Joules CLASS TABLE part I
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D. F. Nachman Thermochemistry: An Ice Calorimeter Determination of Reaction Enthalpy 9/11/2014 Introduction: A chemical reaction often indicated by a transfer of energy measured in heat. By measuring this heat transfer in a constant pressurized environment‚ the enthalpy of the reaction can be used to infer certain information about a specific reactions reactants and products. The transfer of heat from outside sources in would be described as an endothermic reaction. Contrary‚ when
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Lab No.1: density‚ accuracy and precision Aim: to determine the relative precision and accuracy of different glassware items by calculating the density of a known substance. Introduction: the density of a substance is its mass per unit volume. (where P-density‚ m- mass and v- volume). Different materials usually have different densities and densities vary according to the pressure‚ temperature and purity of a substance. When measuring‚ there is always a small uncertainty or error and therefore
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Emilia Monroe August 27‚ 2014 Experiment #01 The Determination of the Percent of Water in a Compound CHEM 1315-022 For experiment one‚ The Determination of the Percent of Water in a Compound‚ the sole purpose of conducting this experiment was to determine the percent of water found in compounds such as Magnesium Sulfate‚ Copper Sulfate‚ and so on. Along with determining the percentages of the hygroscopic compounds the experiment allowed for the exploration of separation of hydrogen bonds
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2.4.4. Direct determination of saliva proteins Protein contaminated with nucleic acids absorbed the light at wavelength 280 nm and it absorbs much strongly at wavelength 205 nm when it is free from nucleic acids. The UV-visible spectrophotometer was used in determination of saliva proteins (Figure 2.2). Cold trichloroacetic acid (10 % w/v ) was added to the sample‚ centrifuged for 10 minutes to precipitate protein. The absorbance of a known volume
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Experiment 3: Cryoscopic Determination of Molecular Weight Aim: The primary objective of the experiment is to calculate the total molecular mass of the compound benzoic acid in a predetermined amount of cyclohexane. Introduction: One of the key concepts in this experiment is the term freezing point depression. The definition of this phrase is that when a solute is dissolved into a solvent‚ their collective boiling point will be less than that of the original boiling point of the solvent. This incidentally
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Gravimetric determination of sulphate in fertiliser Question: The proportion of sulphate present in a brand of commercial fertiliser under a range of temperatures. Fertilisers provide plants with a number of sources necessary for them to grow‚ as follows‚ nitrogen‚ phosphorus‚ potassium and finally the one I will be concentrating on Sulfur. To cater for the varying plants‚ you wouldn’t require all these elements to the same extent as the necessities for each plant differ. The composition of different
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