1 gm of dry green algae absorbs 5 moles of `CO_(2)` per hour by photosynthesis. If fixied carbon atoms were all stored in the form of starch `(C_(6)H_(12)O_(6))_(n)` after photosynthesis, then calculate time required (in sec) to double the weight of algae.

1 g of dry green algae absorbs 4.7 times 10^(-3) mole of CO_(2) per hour by photosynthesis. If the fixed carbon atoms were all stored after photosynthesis as starch (C_(6)H_(10) O_(5))_(n) how long would it take for the algae to double their own weight assuming photosynthesis takes place at a constant rate ?

1.62 g of green algae absorbs 6 xx 10^(-3) mol CO_(2) per hour by photosynthesis. If the fixed C atoms are all stroed after photosynthesis as starch (C_(6) H_(10) O_(5))_(n) , how long will it take for the alge to double their own weigth? [Mw "of" (C_(6)H_(10) O_(5))_(n) = 162 n]

1.62 g of green algae absorbs 6 xx 10^(-3) mol CO_(2) per hour by photosynthesis. If the fixed C atoms are all stroed after photosynthesis as starch (C_(6) H_(10) O_(5))_(n) , how long will it take for the alge to double their own weigth? [Mw "of" (C_(6)H_(10) O_(5))_(n) = 162 n]

Human lungs can absorb 8gm O_(2) per hour by respiration. If all oxygen atoms are converted to carbohydrates (C_(6)H_(12)O_(6) how long will it take to produce 180 gm C_(6)H_(12)O_(6) ?

Human lungs can absorb 8gm O_(2) per hour by respiration. If all oxyggen atoms are converted to carbohydrates (C_(6)H_(12)O_(6) how long will it take to produce 180 gm C_(6)H_(12)O_(6) ?

In the atmosphere, carbon dioxide is found in two forms, i.e., .^(12)CO_(2) and .^(14)CO_(2) . Plants absorb CO_(2) during photosynthesis. In presence of chlorophyll, plants synthesise glucose. 6 CO_(2) + 6 H_(2) O to overset(hv)(to) C_(6)H_(12)O_(6) + 6O_(2) uarr Half life of .^(14)C is 5760 years. The analysis of wooden artifacts for .^(14)C and .^(12)C gives useful information for deermination of its age. all living organisms, because of their constant exchange of CO_(2) with the surrounding have the same ratio of .^(14)C to .^(12)C , i.e., 1.3 xx 10^(-12) . When an organism dies, the .^(14)C in it keeps on decaying as follows: ._(6)^(14)C to ._(7)^(14)N + ._(-1)^(0)e + Energy Thus, the ratio .^(14)C//^(12)C decrease with the passage of time. we can be used to date anything made of organic matter, e.g., bone, skeleton, wood, etc. Using carbon dating material have been dated to about 50,000 years with accuracy. A wooden piece is 11520 yrs old. What is the fraction of .^(14)C activity left in the piece?