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The air exists 1/5 of oxygen and 4/5 of nitrogen of its volume. Find the volume of the required air for burning 10 cm3 of hydrogen gas (volume of gases is measured in the same temperature and pressure).
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Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.
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The air exists 1/5 of oxygen and 4/5 of nitrogen of its volume. Find the volume of the required air...
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