from the enthalpies of reaction 2c(s)+o2(g) 2c(s)+o2(g)+4h2(g)→→2co(g)2ch3oh(g) δhδh=−221.0kj=−402.4kj 2 c (s)+ o 2 (g) → 2 c o (g) δh =−221.0 k j 2 c (s)+ o 2 (g)+4 h 2 (g) → 2 c h 3 o h (g) δh =−402.4 k j calculate δh δ h for the reaction co(g)+2h2(g) → ch3oh(g)

This graph represents four ecosystems. each ecosystem has a different number of species, adding to its biodiversity. different colors represent different species. which statements correctly summarize the data depicted by the graph? 1. ecosystem d has more biodiversity than ecosystem c. 2. ecosystem b has more biodiversity than all the other ecosystems. 3. ecosystem a has more biodiversity than ecosystem b but less biodiversity than ecosystem c. 4. ecosystem b has more biodiversity than ecosystems c and d but less biodiversity than ecosystem a. 5. ecosystem a has more biodiversity than ecosystem c but less biodiversity than ecosystem b.

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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