26) The floor tiles in SE 27 are about 1 square foot and the lab is about 25 tiles wide and about36 tiles from front to back. When the emergency shower was demonstrated, in 10. secondsthe water in the trash can was about 1 foot deep. One student estimated this was 2.5 gallons.Estimate how deep the room will get in inches after a 15 minute shower. List 3 simplifvingassumptions you make in this calculationreaL-36 TilefiDwill it cost2 The density of gold is27l An artist plans to apply gold leaf to a painting with an area of 2.32 f? and a thickness of 1.50

The area of floor is the product of length and width of floor which can be determined as:Where, l is…

Answered: 26) The floor tiles in SE 27 are about…

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter7: Solutions And Colloids

Section: Chapter Questions

Problem 7.86E

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Based on the charles' law, the following errors in procedure will affect the experimental result. Explain how wach action causes an incorrect result. Procedure(part A) 1) Student A was in a hurry and stopped heating, even though bubbles were still emerging from the rubber tubing. 2) Student B used the measurement of Flask no. 1 to be 250mL, without measuring the volume directed. 3) Student C recorded the temperature in degrees Celcius and used these values in calculations. Procedure(part B) 4) Water remained on the outside of the flask and on the foil when the final mass was determined.
Is 10 ppm 400% less than 50 ppm?
A 1 mL sample of glycogen was calculated to contain 21 µmol (micromole) glucose. To 1 mL of this sample was added 2 mL of 2 M HCl. It was then hydrolysed by boiling the solution for 15 minutes. After boiling the hydrolysate was cooled and made up with H2O to a final volume of exactly 10 mL. The glucose was measured in this solution and found to have a concentration of 340 µg/mL (microgram/milliliter). i) Calculate the mass (mg) of glucose in the 10 mL of hydrolysate. As the 1 mL of glycogen sample was made up to a final volume of 10 mL, this mass of glucose was produced by the hydrolysis of the original 1 mL glycogen sample. ii) Calculate the amount (µmol) of glucose produced by the hydrolysis of the glycogen sample. iii) Calculate the purity of the glycogen used in the sample as % Purity = (moles of measured glucose/ moles of calculated glucose in glycogen) *100 iv) state your answer in a complete sentence. Show your working out such that the marker can easily understand it.…
1. How many milliliters of concentrated hydrochloric acid, 38% (wt/wt), specific gravity 1.19, are requiredto prepare 1 L of a 0.100 M solution? Assume density and specific gravity are equal within threesignificant figures. (H-1.008 amu, Cl-35.45 amu) 2. A 0.456-g sample of an ore is analyzed for chromium and found to contain 0.560 mg Cr2O3.Express the concentration of Cr2O3 in the sample as %w/w.
You were in the middle of a tropical rainforest and it is very humid in the environment. Do you have a glass of pure water that you have left outside for two days. Nothing has come to drink it and it has not rained either for those two days you measure the amount of water in the glass after these two days and it is exactly the same volume that was present two days before answer 22-25
A student prepares a a1.0mM aqueous solution of 4-chlorobutanoic acid C3H6ClCO2H. Calculate the fraction of 4-chlorobutanoic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits.
A 1 mL sample of glycogen was calculated to contain 35 µmol (micromole) glucose. To 1 mL of this sample was added 2 mL of 2 M HCL. It was then hydrolysed by boiling the solution for 15 minutes. After boiling the hydrolysate was cooled and made up with H2O to a final volume of exactly 10 mL. The glucose was measured in this solution and found to have a concentration of 570 µg/mL (microgram/milliliter). i) Calculate the mass (mg) of glucose in the 10 mL of hydrolysate. As the 1mL of glycogen sample was made up to a final volume of 10 mL, this mass of glucose was produced by the hydrolysis of the original 1 mL glycogen sample. ii) Calculate the amount (µmol) of glucose produced by the hydrolysis of the glycogen sample. iii) Calculate the purity of the glycogen used in the sample as % Purity = (moles of measured glucose/ moles of calculated glucose in glycogen) *100 iv) state your answer in a complete sentence.
A blood concentration of 0.065 M ethyl alchohol is sufficient to induce a coma. Blood alcohol content is a measure of alcohol in the blood as a percentage. It is calculated in grams per 100mL of blood, so a BAC os 0.08 means your blood is 0.08% alcohol by volume. a) What is the total mass of alcohol (in grams) that it represents for the same adult male whose total blood volume is 5.6L? b) What percentage does it represent from the coma induced level?
A core sample is saturated with an oil (?o = 35oAPI), gas and water. The initial weight of the sample is 224.14 g. After the gas is displaced by water (?w = 1 g/cm3 ), the weight is increased to 225.90 g. The sample is the placed in a Soxhlet distillation apparatus, and 4.4 cm3 water is extracted. After drying the core sample, the weight is now 209.75 g. The sample bulk volume, 95 cm3 is measured in a mercury pycnometer. Find the porosity, water saturation, oil saturation, gas saturation and lithology of the core sample.
The physician orders an IV solution to infuse at the rate of 44gtt/min. The infusion set is calibrated for a drop factor of 5gtt/mL. How much of the solution will infuse during 2.5 hour? Round your answer to the nearest mL. mL
The alcohol content of hard liquor is normally given in terms of the “proof,” which is defined as twice the percentage by volume of ethanol (C2H5OH) present. Calculate the number of grams of alcohol present in 1.00 L of 75-proof gin. The density of ethanol is 0.798 g/mL. Round off to 4 sig. figures for all calculations made prior to final answer and the final answer should be in 3 sig. figures
1)The fat content of 10 g of commercial ice cream was determined by the Mojonnier method. The weights of the extracted fat after the second extraction and the third extraction were 1.30 and 1.36 g, respectively. How much of fat, as percentage of the total, was extracted during the third extraction?

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