Determine the maximum theoretical specific gravity of a paving mixture having a weight of1210gm in air and 635gm in water. Knowing that the voids in mineral aggregate is 14 %, theasphalt content used in this mixture is 5.5 % with a specific gravity of asphalt equals to 1.02and the amount of asphalt absorbed by aggregates is 1.3%.

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Answered: Determine the maximum theoretical…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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(c) The data set below represents the surface tension data for aqueous solutions of 3- methylbutanoic acid [(CH3)2CHCH₂COOH] at 25°C. [C] [mol.dm³] 0 Y[mN.m'] 72.7 0.009 64.6 0.026 59.0 0.065 51.3 0.135 47.0 (i) Calculate the surface excess of 3-methylbutanoic acid (in mol.m2) and (ii) Hence estimate the molecular cross sectional area (in nm²) for this surface active molecule. (iii) Compare your estimate with the molecular cross sectional area one might expect for n-butanoic acid and account for the difference, if any, between the two surface active molecules.
Given the property on the left as the criterion, which of the following order of comparison is TRUE? Select one: a. Increasing electrical conductivity at 25 °C: Si < SiO2 < SiCl4 b. Increasing standard boiling point: 0.10 molal solution of sucrose in CH3CH2OH < pure CH3CH2OH < 0.10 molal aqueous solution of sucrose c. Increasing standard melting point: I2 < Br2 < Cl2 d. Increasing melting point: Na < NaCl < Na2O
An underfeed stoker feeds coal to a boiler at the rate of 100 kg/hr. The ultimate analysis of coal is: C = 75.2 %, H;= 3.6 %, O2 = 7.4 %, N2 = 1.2 %, S = 2.1 % and the remaining is Ash. The dry refuse taken from the ash pit shows 20 % C and 80 % ash by weight. Orsat analysis of the flue gases gives the following composition, CO2 = 75.2 %, O, = 7.9 %, CO= 1 % Determine: a) m³ of air supplied per minute if the pressure is 100 kPaa and 20 °C; b) Total volume of flue gases flowing through the stack per minute if the temperature is 60 °C and pressure is 100 kPaa.
1. Electron microprobe analysis of olivine from a mid oceanic ridge basalt (MORB) yielded the following abundances of FeO = 8.76 wt.% and MgO = 49.95 wt.%. Express the olivine composition as: A) mol % Fo (forsterite) and mol % Fa (fayalite) component
It is desired to determine the molecular weight of an organic compound known to be volatile. For this, a glass balloon with a full volume of 152 mL is weighed and the weighing result is recorded as 215 g. Then, the organic compound that is desired to have some molecular weight in liquid form is added into the balloon and evaporated in a water bath until dryness. After the steam temperature is measured as 90 °C, the balloon is left to cool and the organic compound in the balloon condenses again. The balloon is then weighed again and recorded as 215,367g. Find the molecular weight of this organic compound since the pressure of the environment where the experiment is performed is 700 mmHg.
Describe the process of catalytic cracking used in petroleum refining industry.Your answer must include : (1) a balanced chemical equation inluding physical states and reaction conditions (2) example of a product formed from catalytic cracking in petroleum refining and its use
The percentage composition of a sample of anthracite coal is C = 90, H = 3.5, O = 3.0, N= 1.0, S= 0.5 remainder being ash. Estimate the minimum amount of air required for the combustion of 1 kg of coal. Calculate the percentage composition of dry products of volume if 50 % excess air is supplied for combustion.
With the aid of sketches, explain the solidification of Fe-Al alloy from liquid to final microstructure present at room temperature. Determine the phase present, their individual composition, and the phase fraction at 250°C.
Give a clear handwritten answer with explanation
A sample of feldspar weighing 1.500g is decomposed, and eventually there is obtained a mixture of KCl and NaCl weighing 0.1801 g. These chlorides are dissolved in H2O, a 50-mL pipetful of 0.08333 N AGNO3 is added, and the precipitate is filtered off. The filtrate requires 16.47 mL of 0.1000N KCNS, with ferric alum as indicator. Calculate the percentage of K2O in the silicate.
Determine the solubility parameters for amorphous polypropylene and poly(methyl methacrylate). (Densities of the two polymers are 0.905 and 1.18 g/mL, respectively.) Consult a polymer handbook and suggest suitable solvents for the two polymers on the basis of solubility parameters.

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