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Galina-37 [17]
2 years ago
14

What is the main job of a leaf

Chemistry
1 answer:
DochEvi [55]2 years ago
8 0

Well, I think it's mainly for photosynthesis and gas exchange. A leaf is normally flat, light, and thin, so that the sunlight can get to the chloroplasts in the cells.

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2 years ago
How many liters of water can be made from 55 grams of oxygen gas and an excess of hydrogen at a pressure of 12.4 atm and a tempe
polet [3.4K]
First, we need the no.of moles of O2 = mass/molar mass of O2
                                                             = 55 g / 32 g/mol
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from the balanced equation of the reaction:
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we can see that the molar ratio between O2: H2O = 1: 2 
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                                                                  = 2 * 1.72 mol
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So by substitution by this value in ideal gas formula:
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when P = 12.4 atm  & n H2O = 3.44 mol & R= 0.0821 & T = 85 + 273=358K

12.4 atm *V = 3.44 * 0.0821 * 358 = 8.15 L
 ∴ V ≈ 8.2 L 
4 0
3 years ago
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