Volume of water in cylinder 21.6 mL Mass of empty beaker 75.360 g Mass of beaker with water 97.315 g Mass of water in beaker ______ g Density of water _______ g/mL Calculate the average density you determined for this unknown liquid and record below. [_________ g/mL +_________ g/mL] / 2 = _____________g/mL

Volume of water in cylinder 21.6 mL Mass of empty beaker 75.360 g Mass of beaker with water 97.315 g Mass of water in beaker __ g Density of water _ g/mL Calculate the average density you determined for this unknown liquid and record below. [___ g/mL +_ g/mL] / 2 = _________g/mL

Chemistry In Focus

7th Edition

ISBN:9781337399692

Author:Tro, Nivaldo J.

Publisher:Tro, Nivaldo J.

Chapter2: The Chemist’s Toolbox

Section: Chapter Questions

Problem 7E

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Similar questions

Magnesium chloride is an important coagulant used in the preparation of tofu from soy milk. Its solubility in water at 20C is 54.6 g/100 g. At 80C, its solubility is 66.1 g/100 g. A mixture is made up of 16.2 g of magnesium chloride and 38.2 g of water at 20C. (a) Is the mixture homogeneous? If it is, how many more grams of magnesium chloride are required to make a saturated solution? If the mixture is not homogeneous, how many grams of magnesium chloride are undissolved? (b) How many more grams of magnesium chloride are needed to make a saturated solution at 80C?
How does the International System (SI) obtain units of different size from a given unit? How does the International System obtain units for all possible physical quantities from only seven base units?
A supersaturated sugar solution (650.0 g sugar in 150.0 g water) is prepared to make rock candy. The solution is kept at 25C, where the solubility of sugar is 220.0 g/100 g water. A string is dipped into the solution, and in time, large crystals of sugar (rock candy) form. How many grams of solid are obtained when the solution just reaches saturation?
The mass of a beaker is 5.333 g. After 5.00 mL of a concentated hydrochloric acid solution is pipet Ted into the beaker, the combined mass of the beaker and the hydrochloric acid sample is 11.229 g. From the data, what is the measured density of the hydrochloric acid solution?
At 20oC 25.0 ml of concentrated nitric acid solution was found to have a mass of 32.503 g. What is the calculated density of this solution at 20oC? Show your calculation set-up and result using correct significant figures and proper units. Volume of Nitric acid = 25.0 ml Mass of nitric acid = 32.503 g Density = mass of substance Density= Mass of nitric acid volume of substance volume of nitric acid = 32.503g 25 .0mL = 1.30g/mL (3 sig figures) Using the calculated density of the solution from above, what is the mass of 150 ml. of the solution? Again show your solution set-up with correct significant figures and units.
A student obtains the following data: a- Mass of evaporating dish 21.345 g b- Mass of evaporating dish and saturated NaCl solution 42.817 g c- Mass of dish and NaCl after evaporation 38.915 g Report the Mass % of NaCl in this solution. Write the number as a percentage with the correct number of significant figures as shown. (i.e. 25%) There should be no space between the numbers and the % sign.
An experiment with a pycnometer resulted in the following data: Mass of Pycnomter = 25.428 g Mass of Pycnometer filled with water = 44.021 grams Mass of Pycnometer filled with liquid X = 41.421 grams a) What is the specific gravity of liquid X? b) If methanol (Specific Gravity = 0.790) was used rather than water in measuring the density of irregular objects, how would that affect the result? Why?
A density bottle test on a sample of dry soil gave the following results:Mass of 50ml density bottle empty (g) = 25.07Mass of 50ml density bottle+20g of dry soil particles (g) = 45.07Mass of 50ml density bottle+20g of dry soil particles, with remainder of space in bottle filled with water (g) = 87.55Mass of 50ml density bottle filled with water only (g) = 75.10Calculate the relative density (specific gravity) of the soil particles. Round your answer to 2 decimal places.
Measurement of the density of a solid object.Sample you are using is TinVolume of water in cylinder before submerging object 31.5 mL Volume of water in cylinder after submerging object 36.4 mLVolume of object _________mLVolume of object expressed as cm3. _____cm3
Specific gravity is important for diagnosing various health conditions, such as dehydration. The normal specific gravity falls between 1.002 - 1.030. Mild dehydration is indicative from specific gravity that is greater than 1.010 and the higher the value the more dehydrated one may be. A 25 year old female patient wastaken to the hospital with symptoms of extreme thirst, fatigue, and headaches. An 0.0077 liter urine sample was taken for the patient described above. The sample had a mass of 8.05 grams.
An experiment was performed to look at how density changes when t he ratio of water and ethanol was changed. The following data was obtained: % Mass Ethano1.00 2.50 3.50 4.00 6.00 7.50 9.50 Density, g/mL0.9963 0.9936 0.9918 0.9910 0.9878 0.9855 0.9826 Use Excel or a similar spreadsheet program to plot these six data points and answer the following questions . a.What is the independent variable? b.What is the dependent variable? c.What is the equation of the best-‐fit line? d.What is the value of the coefficient of determination? e. According to the best-‐fit line, what should the density of pure water be (i.e. what is the density when % mass ethanol = 0.00)?
density of unknown liquid initial mass of erlenmeyer flask 119.528 g final mass of erlenmeyer flask 127.382 g mass of water 10.00 g volume of water 10.00 mL what is denisty of unknown liquid? average density of liquid g/mL, show calculations:

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