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How to make a devil diver (Cartesian diver)
Find a tall glass jar with a quite wide mouth. Wrap a few turns of copper wire about the thin part of the rubber bulb from a medicine dropper. Fill the jar brim full of water. Put a little water in the bulb and float it in the jar of water. The bulb should have enough water to bring it nearly to the point of sinking. At this point approximately all the rubber will be under water. Considerable adjustment will be needed. Remove air from the bulb a bubble at a time by pinching the bulb.
The active ingredient in Antabuse, a drug used for the treatment of chronic alcoholism, is tetraethylthiuram disulfide, C10H20N2S4 (fw = 296.54). The sulfur in a 0.4329 g. sample o
How to prevent the erosion of topsoil Use the trays constructed for the experience above. (a) Fill the trays with loose soil and tilt everyone the similar amount. Make furr
fertilization of an earthworm
What are the chemical properties of acetic acid?
describe briefly the scientific and technical achivement of the bronze age
In the following table state how gymnosperms are adapted for living on land with respects to each of the following aspects Aspect Adaptation for living on land Alternation of Gener
What is Decarboxylation Reaction and Biogenic Amines What are biogenic amines? Any of a group of naturally occurring, biologically active amines, such as norepinephrine, histam
Another balloon experiment Stretch a rubber balloon over the neck of a little bottle. Place it in the receiver jar and delete some of the air with the pump. What happens? How d
Release of Energy : When the atom splits, the masses of the fragments and the neutrons produced do not add up to the mass of the original. A tiny amount of matter disappears. Th
The characteristic properties of an aquifer can be used to calculate groundwater velocities, v groundwater (L/T), according to: V groundwater = K H / η (dh/dl) where KH (L/
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