growth if no crystals are forming upon a. scratch air-liquid interface on flask with a glass rod or spatula b. add a seed crystal c. boil off excess solvent volume d. all options are possibilites
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10. Which is a way to induce crystal growth if no crystals are forming upon
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- 8. Pay attention to the lipbalm formula of aloe vera extract (Aloe vera.L): Glycerin 5% Cera flava 10% Nipagin 0.18% Lanolin 15% Oleum cacao ad 100% Aloe vera extract 10% The preservative in the formula is .... A. aloe vera extractB. cera flavaC. nipaginD. oleum cacao36- At Powder Pressing of ceramic, the function of binder is ….. * a- decreasing of porosities. b- lubrication of particles. 37- Ceramic substrates that are used for integrated circuits and layered capacitors are manufactured by ……. * b- tape casting. a- rolling. 38- Material which has no fixed solidification temperature, is considered as…. * a- crystalline. b- glass. 39- Refractories that are rich in magnesia (MgO) are termed…… * a- Acidic. b- Basic. 40- The function of Feldspar is …… * a- filler. b- flux. c- plastic material.os the enrgy cost to break IMFs for acetone to mix with water likely larger or smaller?
- Question 3 Circle the best answer: a. Dissolving O in Cu: a) O: solvent, Cu: solute b) 0:solute, Cu: solvent c) O is a solid solution d) Cu is a solid solution b. If a material is ductile, it will also be: a) Brittle b) Tough c) Elastic d) None of the Above c. The number of defects and the structure can be varied and controlled by: a) Temperature b) Pressure c) Solid solution d) Electrical propertie d. Hardness and tensile tests are used to study the electrical properties of a material: a) True b) Falseplease don't provide hand writtion solution...Placing a between the "pot" and the distillation head increases the number of theoretical plates and thus increases the efficiency of the distillation apparatus. [Select]
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- Volumetric pipettes are designed to deliver a very precise amount of liquid, but only if you O a. submerge the end of the pipette into the solution you are delivering. O b. allow the pipette to drain freely, and leave any residual solution in the pipette. C. use the bulb to blow out any residual liquid left in the pipette. O d. hold the pipette at a 45 degree angle and ensure that all the liquid is delivered.3. Main important factor affecting on skin formation determination represented by; * None of the above Permeability O Method of perforation Porosity 4. Water and gas coning through hydrocarbon reservoirs basically controlled by; * Both (a) and (b Maximum production rate Type of completiondont provide handwrtiing solution ...