Urea, CO(NH2)2, is manufactured on a large scale for use in producing urea-formaldehyde plastics and as a fertilizer. What is th
2 answers:
Answer: 4999.98 kg
Explanation:
Balanced reaction for combustion of carbon:
Moles =
Moles of
From the stoichiometry:
1 mole of C produces 1 mole of
Thus 83333 moles of C produce= of
From the combustion reaction equation provided
From the stoichiometry:
1 mole of produces = 1 mole of
Thus 83,333 moles of produce=
of
Mass of As (1kg=1000g)
Thus maximum mass of urea that can be manufactured from the produced by combustion of
of carbon is 4999.98 kg
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The age in years of the Egyptian papyrus, the Aboriginal charcoal, the Mayan headdress, and the Neanderthal skull are 4000 years, 13106.5years , 2040 years, and 30353 years respectively.
<h3>What is the half-life of a radioactive material?</h3>The half-life of a radioactive material is the time taken for half the atoms present in the material to decay or disintegrate.
The half-life, , the age, t, and amount remaining,
, of a radioactive material are related by the formula below:
Half-life of carbon-14 = 6000 years
For the Egyptian papyrus with 63% of its original carbon-14 atoms:
For the Aboriginal charcoal with 22% of its original carbon-14 atoms:
For the Mayan headdress with 79% of its original carbon-14 atoms:
Neanderthal skull with 3% of its original carbon-14 atoms:
Therefore, the age in years of the Egyptian papyrus, the Aboriginal charcoal, the Mayan headdress, and the Neanderthal skull are 4000 years, 13106.5years , 2040 years, and 30353 years respectively.
Learn more about half-life at: brainly.com/question/26689704
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