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Mastering Biology Ch 04 HW Questions and Answers 2024
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Mastering Biology Ch 04 HW
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Mastering Biology Ch 04 HWMost organic compounds contain carbon and _____. - answer Hydrogen
What is the molar ratio of methionine to glycine in the samples? - answer1.8 × 10-3
mole of methionine per mole of glycine
How many molecules of glycine are present in 1.0 mole of glycine? - answer6.02 × 1023
molecules
For every 1.0 mole of glycine in the sample, how many molecules of methionine are
present? - answer1.08 × 1021 molecules of methionine
Which amino acid is present in higher amounts than glycine in the samples? - answer
Alanine
If there is 1.0 mole of glycine present in the sample, how many more molecules of
alanine are present? - answer6.02 x 1022
If one mole each of CH4, NH3, H2S, and CO2 is added to 1 liter of water in a flask (1
liter of water = 55.5 moles of H2O), how many moles of hydrogen, carbon, oxygen,
nitrogen, and sulfur are in the flask? Round your answers to the nearest whole number.
- answerHydrogen-120
Carbon-2
Oxygen-58
Nitrogen-1
Sulfer-1
Glycine's molecular formula is C2H5NO2. How many moles of each element would be
needed to make 1.0 mole of glycine? - answer2 moles carbon, 5 moles hydrogen, 1
mole nitrogen, and 2 moles oxygen
What is the maximum number of moles of glycine (C2H5NO2) that could be made in the
flask if no other molecules were made? - answer1 mole of glycine
If only serine (C3H7NO3) was made, which element would be used up first in the flask?
- answerCarbon
What is the maximum number of moles of serine that could be made in the flask if no
other molecules were made? - answer2/3 (0.67) of a mole of serine
If only methionine (C5H11NO2S) was made, which element would be used up first? -
answerCarbon
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