During exercise, your body needs more energy, which means your tissues consume more oxygen than they do at rest. Consuming more oxygen means you will also produce more carbon dioxide because your metabolic rate is elevated.
The heat exchange is due to the excess energy released in the chemical reaction.
The balanced chemical equation for the formation of methane from carbon and hydrogen is,
C + 2H2 --> CH4
This suggests that every 12 grams of C needs 4 grams of H in order to produce 16 grams of methane.
0.05 grams of hydrogen (H2) x (16 grams methane / 4 grams H) = 0.2 grams of methane.
1.20 grams carbon x (16 grams carbon / 12 grams of C) = 1.6 grams methane
We take the lower amount of carbon. Thus, the reaction will produce approximately 0.2 grams methane.
4Al + 3O2 --> 2Al2O3
2Al2O3 + 6HCL --> 2AlCl3 + 3H2O
Number of moles of Al= 0.02mol
Number of mples of Al2O3 = 0.01mol
Number of HCl needed= 0.01mol * 3 =0.03mol
Minimum volume = 0.03mol / 2molperdm^3= 0.015dm^3 =15cm^3
Answer is A
When balancing chemical equations you first must equal out the all the blanks and balance the same chemicals with their peers.
