The answer is B Digestion
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Chloroplasts.
Always present in almost all plants because they are vital to the process of photosynthesis and primary food production. Onions are not primary producers and do not produce their own food and hence do not require this organelle!
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Ag - 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d⁹
Answer : The excess reactant in the combustion of methane in opem atmosphere is molecule.
Solution : Given,
Mass of methane = 23 g
Molar mass of methane = 16.04 g/mole
The Net balanced chemical reaction for combustion of methane is,
First we have to calculate the moles of methane.
= = 1.434 moles
From the above chemical reaction, we conclude that
1 mole of methane react with the 2 moles of oxygen
and 1.434 moles of methane react to give moles of oxygen
The Moles of oxygen = 2.868 moles
Now we conclude that the moles of oxygen are more than the moles of methane.
Therefore, the excess reactant in the combustion of methane in open atmosphere is molecule.
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