The Density of a material may be determined by determining the mass and volume of a sample material and calculating the mass/volume ratio. An independent variable is the variable that is being manipulated or changed during the experiment. The dependent variable is the variable that is being measured. The independent variable for this experiment is the copper because you are only changing the amount of copper you use. The dependent variable is the density because we are measuring the density. In
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are the density‚ relative error and the standard deviation. Density is refers to the mass (m) per unit volume (V) of a material and is often represented by the symbols d or ρ‚ where d = m/V. The density of an object changes with pressure and temperature. Second‚ relative error is a calculated by finding the difference between the true and measured values and dividing this difference by the true answer. And‚ the standard deviation is the measure of the spread of dispersion of scores (density) from the
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Apparatus INTRODUCTION Density is defined as mass per unit volume. The commonly used unit to indicate the density of water is (g/cm3). Water never has an absolute density because its density varies with temperature. Water has its maximum density of 1 g/cm3 at 4oC. When the temperature changes from either greater or less than 4oC‚ the density will become less than 1g/cm3 only when it is pure water. Other factors that can affect water’s density whether it is tap water‚ fresh water or
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3.6 cm high‚ 4.21 cm long‚ and 1.17 cm wide. If the mass is 21.3 g‚ what is this substance’s density (in grams per milliliter)? * Volume= 3.6*4.21*1.17= 17.7g * Density= mass/volume= 21.3/17.7= 1.2g/mL * Density= 1.2g/mL D. A sample of gold (Au) has a mass of 26.15 g. Given that the theoretical density is 19.30 g/ml‚ what is the volume of the gold sample? * Volume= mass/density= 26.15/19.30= 1.35mL * Volume= 1.35mL E. What would happen if you dropped the object into
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Lab Report: DRILLING FLUID (MUD) DENSITY Objective: The aim of this experiment is to determine the mud density‚ specific gravity and hydrostatic pressure gradient for water-based-mud‚ WBM (Drilling fluid) using the OFITE mud balance. Theory: Drilling fluids are used during the drilling of boreholes‚ either for oil wells or water boles holes. One of the major functions of a drilling fluid includes providing hydrostatic pressure to prevent formation fluids from entering the wellbore. To ensure
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slope‚ which could give the density value. The calculation of significant figures was one of the key objectives in this lab as well. Significant figures are essential to interpreting data because they allow for increased precision and accuracy. Also‚ using Excel‚ the density calculations could be performed quickly and accurately. In this experiment‚ the density of water was found by collecting the masses known‚ which was volumes of water. To determine what the unknown density is‚ the mass should be divided
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Laboratory Techniques and Measurements Peter Jeschofnig‚ Ph.D. Version 42-0165-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing
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following calculations and be careful to follow significant figure rules in each calculation. 1. Part I: Density of Unknown Liquid 1. Calculate the mass of the liquid for each trial. (Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid.) Trial 1 36 - 25.5 = 10.5 Trial 2 36.5 - 25.5 = 11 Trial 3 36.9 - 25.5 = 11.4 2. Calculate the density of the unknown liquid for each trial. (Divide the mass of the liquid calculated above by the volume of
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the virtual lab. Be sure the data table is viewable. Right-click (PC) or Command-Click (Mac) on the table and select print. Part I: Density of Unknown Liquid Trial 1 Trial 2 Trial 3 Mass of Empty 10 mL graduated cylinder (grams) 26.0 Volume of liquid (milliliters) 8.5 Mass od graduated cylinder and liquid (grams) 30.7 Part II: Density of Irregular-Shaped Solid Trial 1 Trial 2 Trial 3 Mass of solid (grams) 39.67 39.25 42.126 Volume of Water (milliliters)
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hydrometer is an instrument to measure the relative density of liquids. It consists of a tube with a bulb at one end. Lead shots are placed in the bulb to weigh it down and enable the hydrometer to float vertically in the liquid. In a liquid of lesser density‚ a greater volume of liquid must be displaced for the buoyant force to equal to the weight of the hydrometer so it sinks lower. Hydrometer floats higher in a liquid of higher density. Density is measured in the unit of g cm-3. 4. SHIP
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