Biology

Biology, 24.07.2019 10:50, zamirareece17

Certain gases in air are important natural resources that are used in welding. two of these gases are a.) oxygen and argon b.) hydrogen and flourine c.) chlorine and sulfur dioxide d.) nitrogen and carbon dioxide

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Chemistry, 26.06.2019 03:00, sydchann582

The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is a. argon b. xenon c. helium d. krypton the gases used in different types of welding would include a. oxygen and hydrogen b. oxygen, hydrogen, acetylene and nitrogen c. oxygen, acetylene and argon d. oxygen and acetylene the property of a substance to absorb moisture from the air on exposure is called a. osmosis b. deliquescence c. efflorescence d. desiccation in which of the following activities silicon carbide is used? a. making cement and glass b. disinfecting water of ponds c. cutting very hard substances d. making casts for statues the average salinity of sea water is a. 3% b. 3.5% c. 2.5% d. 2%

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SAT, 29.06.2019 02:30, merry69

Certain gases in air are important natural resources that are used in welding. two of these gases are a. oxygen and argon b. hydrogen and fluorine c. chlorine and sulfur dioxide d. nitrogen and carbon dioxide

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Biology, 18.07.2019 06:30, damienwoodlin6

Air is a mixture of many gases, primarily nitrogen, oxygen, and argon. could distillation be used to separate air into its component gases? explain your answer.

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Biology, 25.07.2019 09:00, kyao3393

3/10 why did earth's early atmosphere lose its hydrogen and helium gases? a. the gases were too light to be held by gravity. b. the gases condensed, forming oceans, rivers, and lakes. c. the planet was so hot that all gases escaped into space. d. the gases were replaced by carbon dioxide from volcanic eruptions.

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