7. A constant-head permeameter has cross-sectional area of 156 cm². The sample is 18 centimeters long. At a head of 5 centimeters, the permeameter discharges 50 cm³ in 193 seconds. What is the hydraulic conductivity in a. cm/sec? b. ft/day?
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- The efflux time of glycerin sample is 320 seconds having a density of 1.26 grams per mL. This is based on the room temperature setting. Water is used as a standard with the computed efflux time of 225 seconds having a density of 0.997 grams per mL. Viscosity of water was identified as 0.7202 CP. What is the viscosity of glycerin?2. You are to design a rectangular primary clarifier for a domestic wastewater plant to settle 900 m³/day with an overflow rate of 25 m³/m²-day. The tank is to be 3.2 m deep and 4.0 m wide. How long should it be and what detention time would it have? Calculate the weir loading rate to see whether it is overloaded if only one end weir is used.◄ Mail 3:11 PM Fri Sep 16 M eBooks - My... < 1.90 1.91 1.92 1.93 1.94 1.95 1.96 AA ●●● prod.reader-ui.prod.mheducation.com x Additional Pr... C | Chegg.com G Suppose tha... Answer C Solved: Cha... ↓ C 75% + The surfab Answ Aa by mining gold from the ocean? Measurements show that 1.0 g of iron (Fe) contains 1.1 × 10²² Fe atoms. How many Fe atoms are in 4.9 g of Fe, which is the total amount of iron in the body of an average adult? The thin outer layer of Earth, called the crust, contains only 0.50% of Earth's total mass and yet is the source of almost all the elements (the atmosphere provides elements such as oxygen, nitrogen, and a few other gases). Silicon (Si) is the second most abundant element in Earth's crust (27.2% by mass). Calculate the mass of silicon in kilograms in Earth's crust. (The mass of Earth is 5.9 × 10²¹ tons. 1 ton = 2000 lb; 1 lb = = 453.6 g.) Page 37 The radius of a copper (Cu) atom is roughly 1.3 × 10−¹0 m. How many times can you divide evenly a piece of 10-cm…
- |A sheet of steel 1.5 mm thick has nitrogen |atmospheres on both sides at 1200°C and is per- mitted to achieve a steady-state diffusion con- |dition. The diffusion coefficient for nitrogen in steel at this temperature is 6 x 10-" m²/s, and the diffusion flux is found to be 1.2 x 10-7 kg/m² - s. Also, it is known that the con- centration of nitrogen in the steel at the high- pressure surface is 4 kg/m³. How far into the sheet from this high-pressure side will the concentration be 2.0 kg/m³? Assume a linear concentration profile. Carbon is allowed to diffuse through a steel plate 15 mm thick. The concentrations of car- bon at the two faces are 0.65 and 0.30 kg C/m³ Fe, which are maintained constant. If the pre- exponential and activation energy are 6.2 x 10-7 m/s and 80,000 J/mol, respectively, com- pute the temperature at which the diffusion flux is 1.43 x 10-° kg/m² · s.25 um particles with a density of 2500 kg/m are suspended in a liquid with a density of 1000 kg/m at a concentration of 40 kg/m? Assuming 1 m of suspension, calculate the solids volume fraction and bulk density (Paw) of the suspension.You have a stock solution certified by a manufacturer to contain 160.0 + 0.3 pg So,2-/mL. You would like to dilute it by a factor of 100 to obtain 1.600 pg/mL. Two possible methods of dilution are stated below. For each method, calculate the resulting uncertainty in concentration. Use manufacturer's tolerances in the Tolerances of Class A Volumetric Flasks table and Tolerances of ClassA Transfer Pipets table for uncertainties. (a) Dilute 10.00 mL up to 100 mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again to 100 mL. ug/mL (b) Dilute 1.000 mL up to 100 mL with a transfer pipet and volumetric flask. pg/mL Explain why one method is more precise than the other. Select- v is more precise because the uncertainty in the 10.00 mL transfer pipet is % and the uncertainty in the 1.000 ml transfer pipet is %.
- =.01002 mo B. PREPARE 20 mL of ~ 1M Cacla. 50ml using a balance, weigh out the calculated mass of CoCl₂ 21₂0 M = 2.00×10-4 Into a tared 150ml beaker. Record actual mass of Salt used. Calculated actual masses should agree to + 1.0g of better. Use a graduated cylinder to add 20.0ml of DI water to Flask. Stir Solution w/ stirring rod or a stir bar & Stil plate until the salt is fully dissolved. A better description of the concentration of a solution prepared in this manner is weight percent (wt%.) units, calculated as (g solute/g solution) x 100%, where g solution -g solute + g solvent Calculate report wt% of Ca²t of this solution, water density being 1.0 g/ml 24 Approximate mass of Calla-2H-0 Actual mass of Ca Cl₂ 2H₂0 weighed Wt7. Cata calculation 2.94 2.9470g Chemistry 88, No. 3 (2016) average mass per atom or wA fly ash aerosol of monodisperse particles with a density of 2.0 g/mL and particle diameter of 10.0 mm has a concentration of 1000.0 mg/m3. Calculate the settling velocity in cm/s and the settling rate in g/m2-s. Please answer very soon will give rating surelyDe in SP ASp y! wis wX Lo - Uc M inc media?thread_id3100052186651141&attachment_id3D544292856654782&message_id=mid. late * toPhonetics O www.youtube.com Notes - Lyndon Ber. A Classes I. Ir Express 1:690 as a percentage strength. 0.14% 0.15% O 0.144% O 0.149% ath --png A new-product-deve..jpg 107374629-new-p...png 107374629-ne 31°C L
- in SR Sp y wi> wox Lo Wx W Up M inc senger_media?thread_id%3D100052186651141&attachment_id%3330424532200142&message_id%3D Translate toPhonetics ) www.youtube.com Notes - Lyndon Ber.. A Classes f Express 50ppb of Iron in water in ratio strength. O 1:20,000,000 O 1:20,000 O 1:200,000 o O 1:2,000,000 A pediatric vitamin drug product contains the equivalent fluoride ion woLeaching of Oil from Soybeans in a Single Stage. Repeat Example 12.9-1 for single-stage leaching of oil from soybeans. The 100 kg of soybeans contains 22 wt % oil and the solvent feed is 80 kg of solvent containing 3 wt % soybean oi!. = 0.239, V, = 50.0 kg, x41 = 0.239, N, = 1.5 Ans. L, = 52.0 kg, ya1 wwwwwIn a carburzing process, an initially 0 2% C steel gear is placed in an atmosphere that provides 1 3% C at the surface of the steel at 1000°C. How long does it take to reach a 0.45% C at a depth of 02 cm below the surface? The preexponential and activation energy are Da = 23 x 10 5 m?is and Qa = 148000 Jimol diffusion of C in FCC Fe at this temperature. O a 30.2 hours Ob 196 hours Oc 645 hours Od 71 hours O e 29 hours