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Updated: May 1, 2025
On the other hand, the yeasts and algae required carbon dioxide and yielded copious amounts of oxygen as they grew. In Roger Hunter's little orbit-ship the ventilation shafts were small, a loose network of foot-square ducts leading from the central pumps and air-reconditioning units to every compartment in the ship. But in a ship of this size.... The grill was over a yard wide, four feet tall.
Ignite the charcoal in a hot flame and lower it into a vessel of oxygen. Observe its combustion, letting it remain in the bottle until it ceases to burn. Has anything been formed in their stead? Cover the bottle with a piece of cardboard, and bring the gas and the limewater in contact by shaking. If it turns white, the presence of carbon dioxide is proved.
But it differs from magosphæra in certain important respects. In the first place its cells have chlorophyl, the green coloring matter of plants. It lives therefore on unorganized fluid nourishment, carbon dioxide, nitrates, etc. It is a plant. But certain characteristics render it probable that it once lived on solid food and was therefore an animal.
"Something wrong!" declared the young inventor, when they were back at the hangar, climbing out of the machine. "What was it?" asked Ned. "Didn't use the right kind of chemicals," Tom answered. "From the way the flames shot up, you'd think I had poured oil on the blaze instead of carbon dioxide." "Bless my insurance policy, Tom!" cried Mr.
Compared with our acknowledged records of less than 50 per cent. hatches, he quotes the results obtained in hatching 18,000 eggs at an English experiment station as 62 per cent. I have not obtained any data of English humidity, but it is undoubtedly more uniform than the eastern United States. Ventilation Carbon Dioxide. The last of the four life requisites we have to consider is that of oxygen.
This important function of the plant, in supplying the oxygen we need and in destroying the harmful carbon dioxide, can be illustrated in many graphic ways. We depend upon the plants for our very existence in this respect: they stand between us and destruction from excessive accumulations of carbon dioxide.
Slipping the cover slightly to one side, insert a burning splinter and observe that the flame is extinguished. This proves the absence of sufficient oxygen to support combustion. Pour in a little limewater and shake to mix with the air. The change of the limewater to a milky white color proves the presence of carbon dioxide.
The selection of the best substance to be used as a standard for acid solutions has been the subject of much controversy. Chem. 2HNaCO > Na CO + H O + CO and without loss of any carbon dioxide from the sodium carbonate, such as may occur at higher temperatures. The process is carried out as described below.
So long as the excess of carbon dioxide in the blood was not sufficient to prevent heart action, the rykor would suffer only a diminution of vitality; but would still respond to the exciting agency of the kaldane's brain. Ghek caused the rykor to assume a sitting position with its back against the wall where it might remain without direction from his brain.
How I wished, as I read, that my uncle could have shared with me this revelation of a secret that he had spent his life in a fruitless effort to unravel. We had long since discovered how the Germans had synthesized the carbohydrate molecule from carbon dioxide and water and built therefrom the sugars, starches and fat needed for human nutrition.
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