In determining the density of olive oil (see Table 2.2), one student took exactly 25.00 mL and found the mass to be 22.95 g. A second student took exactly 50.00 mL and found the mass to be 45.90 g. Will each student arrive at the same value for the density? Do each calculation and explain the result

In determining the density of olive oil (see Table 2.2), one student took exactly 25.00 mL and found the mass to be 22.95 g. A second student took exactly 50.00 mL and found the mass to be 45.90 g. Will each student arrive at the same value for the density? Do each calculation and explain the result

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter1: Introduction To Chemistry

Section: Chapter Questions

Problem 1.97QE: Gold leaf, which is used for many decorative purposes, is made by hammering pure gold into very thin...

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1. A 25 mL flask is known to hold a total volume of 27.64 mL when completely filled. The empty flask has a mass of 45.897 grams. The student was to determine the density of an irregularly shaped solid. He added the solid to the flask and determined that the mass of the flask and the solid was 156.11 grams. He then filled the remaining volume of the flask with water and determined that the mass of the flask, water and solid was 171.89 grams. The density of the water was 0.9970 g/mL. Using this information answer the following questions: a) What was the mass of the solid? b) What was the mass of the water? c) What was the volume of water? d) What was the volume of the solid? e) What was the density of the solid?
If a sample of gold alloy has a mass of 87.7 g and is 78.3% gold by mass, what percentage of the alloy is made up of other metals? Write your answer to the nearest tenth of a percent. (I had to alter the wording of this question since it wasn't calculating significant figures properly, so if you got it wrong because of significant figures you can assume you probably actually got it correct.)
I think I did a calculation wrong but I am having trouble understanding significant figures. In this problem, I am calculation the density of water from my previous calculations mass= 7.359g and volume=7.8mL. So I then divided 7.359g by 7.8mL to find density and got (.9434615385) on my calculator which I then turned into (.94) because I believe there should be 2 significant figures. Is (.94) correct or should 1.4 be the final answer?
A student gently drops an object weighing 16.9 g into an open vessel that is full of ethanol, so that a volume of ethanol spills out equal to the volume of the object. The experimenter now finds that the vessel and its contents weigh 10.6 g more than the vessel full of ethanol only. The density of ethanol is 0.789 g/cm. What is the density of the object? Density = g/cm³
In determining the density of olive oil (0.918 g/mL of 20°C), one student took exactly 25.00 mL and found the mass to be 22.95 g. A second student took exactly 50.00 mL and found the mass to be 45.90 g. Will each student arrive at the same value for the density? Do each calculation and explain the result.
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Iron has a density of 7.86 g/cm37.86 g/cm3 (1 cm3=1 mL1 cm3=1 mL). Calculate the volume (in dLdL) of a piece of iron having a mass of 4.32 kgkg . Note that the density is provided in different units of volume and mass than the desired units of volume (dLdL) and the given units of mass (kgkg). You will need to express the density in kg/dLkg/dL (1 cm3 = 1 mL1 cm3 = 1 mL) before calculating the volume for the piece of iron. Express your answer to three significant figures.
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what mass (in g) of solid lead would displace exactly 234.6 liters of water? The density of the lead that is given is 11.4 g/cm^3. the correct answer must contain the appropriate use of significant figures.
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