Scientists have correlated average global temperature with atmospheric carbon dioxide levels for the last 160,000 years using ice cores from Antarctica.  How is the carbon dioxide level determined?   A. By measuring the carbon dioxide concentration in trapped air bubbles in the ice layers   B. By measuring the 18O/16O ratio in the carbon dioxide molecules   C. By extrapolating the carbon dioxide level from the temperature of the ice   D. By extrapolating the carbon dioxide level from the average global temperature

Q: _ 19. P4S3 _ 20. SiCl, _ 21. Hg2(CN)2

A: Soln

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A: we have choose correct option

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Q: 8. What volume of 0.200M HI is needed to neutralize 65.0 g NaOH? c. 13.0 L d. 8.12 L a. 0.325 L b.…

A: Given,0.200 M HI,65 g of NaOH

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A:

Q: When a metal nitrate is heated, it breaks down to produce a metal nitrite and oxygen. NaNO…

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Q: 9

A:

Q: Question 43

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A:

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Q: This and 2 of the following question refer to the reaction P4 (s)    +    5 O2 (g)    →      2 P2O5…

A:

Q: calculate the mass of water created.

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A:

Q: How many moles of H2 would be required to produce 6.0 moles of water?

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Q: 9. Indicate the products are formed when the following compounds react with ozone. a. b. C. d.

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Q: The percentage of argon gas in dry air A. 0.035% B. 0.065% C. 20.9% The percentage of other gases in…

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Q: 2. What would be the effect on the molar volume if oxygen instead of hydrogen gas (as in equation…

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