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weeeeeb [17]
3 years ago
5

Why did Native diseases not have large impact on Europeans? HELP ME

History
1 answer:
VLD [36.1K]3 years ago
8 0
Small pox virus i think it wiped out the aztecs
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yes I think

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The history of the oxygen regulator
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umm here are some facts about it!Hope this helps!

The first cylinders for storing oxygen were developed in 1868,5 which allowed its use in general anesthesia. By 1885, George Holtzapple used oxygen to manage a young patient with pneumonia, and established its role in acute care.

"The existence and properties of oxygen had been noted by many scientists before the announcement of its isolation by Priestley in 1774. Scheele had also succeeded in preparing oxygen from a number of substances, but the publication of his findings was delayed until after that of Priestley's. As a result, Priestley and Scheele are credited with the discovery of the element independently. The fact that the gas is a component of the atmosphere was finally and definitely established by Lavoisier a few years later. In 1929, W. F. Giaque and H. L. Johnston announced the discovery of two isotopes of oxygen, of mass numbers 17 and 18.

Oxygen is a colorless, odorless, tasteless gas; it is the first member of Group 16 of the periodic table

. It is denser than air and only slightly soluble in water. A poor conductor of heat and electricity, oxygen supports combustion but does not burn. Normal atmospheric oxygen is a diatomic gas (O2) with a molecular weight of 31.9988. Ozone is a highly reactive triatomic (O3) allotrope of oxygen (see allotropy). When cooled below its boiling point oxygen becomes a pale blue liquid; when cooled still further the liquid solidifies, retaining its color. Oxygen is paramagnetic in its solid, liquid, and gaseous forms. Although eight isotopes of oxygen are known, atmospheric oxygen is a mixture of the three isotopes with mass numbers 16, 17, and 18.

Oxygen is extremely active chemically, forming compounds with almost all of the elements except the inert gases. Oxygen unites directly with a number of other elements to form oxides. It is a constituent of many acids and of hydroxides, carbohydrates, proteins, fats and oils, alcohols, cellulose, and numerous other compounds such as the carbonates, chlorates, nitrates and nitrites, phosphates and phosphites, and sulphates and sulphites."

if you would like to know more here you go! This website helped me a lot!! https://encyclopedia2.thefreedictionary.com/oxygen+regulator

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2 years ago
Explain how provisional governments wonk and why they are not completely effective
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They are an outline of how real government should/would work
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