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50+ years ago one-piece solid lumber beams were harvested and plentiful. Due to lumber supply and very high prices, new engineered beams were developed and are very common today.
Your task is to research and compare/contrast glue-lam beams, plywood (how it is made and what it has replaced), and engineered lumber. Include what they are made of, size vs. solid wood beams/materials, overall prices, and the pros/cons. You may include any other information that you feel is relevant.
Google searches may include: Engineered Beams vs. Sawn Lumber Floor Joists Boise Cascade
Problem- Predict the signs of DH, DS and DG of the system from the following process at 1 atm (normal melting point of ammonia is -77.7°C): a) Ammonia melts at -60°C
tris acid dissociation constant is 8.32 x 10 -9. I have 0.1 m soln of tris in protonated form, o.1m soln of HCL and NAOH, and ample distilled water. Describe the preparation of 1L soln of 0.02m tris buffer, ph is 7.8
Question- The dipole moment of formaldehyde is approximately 2.3 Debyes, whereas the dipole moment of carbon monoxide is only approximately 0.1 Debyes. Give a brief explanation of this difference
If a buffer solution is 0.100 M in a weak acid (Ka = 7.2 x 10-5) and 0.560 M in its conjugate base, what is the pH?
why should the glassware not be flame-dried in the vicinity ofdiethyl ether the solvent used for preparing the grignard
Calculate the OH- concentration of a solution that has a [H3O+] of 3.5 x 10-10M. Calculate the [H3O+] of a solution that has an [OH-] of 0.0000060M. Is the solution acidic, basic or neutral
When zn(oh)2 (s) was added to 1.00 l of a basic solution, 1.14×10?2 mol of the solid dissolved. What is the concentration of OH- in the final solution
hydrogen gas is generated when calcium reacts with water. the volume of gas collected over water at 30 degree celcius and pressure of 988 mm Hg is 641 ml. what is the mass in grams of the hydrogen gas obtained? the pressure of water vapor at 30 de..
Calculate the pH and percent hydrolysis of an .1 M potassium formate, KHCOO, solution. Ka of formic acid, HCOOH is 1.7x10^-14. Please show all steps with explantion.
What volume (mL) of a concentrated solution of NaOH (6.00 M) must be diluted to 200. mL to make a 0.88 M NaOH solution
a student prepared a stock solution by dissolving 10.0g of koh in water to make 150. ml of solution. she then took 15.0
How much useful heat will this stove produce per 100 g of liquid propane in winter conditions when temperature of the fuel and air are -30 oC? You can assume that air contains pure oxygen and that heat capacities are independent of temperature.
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