The percentage composition of Nitrogen in the compound is 35.71%
<h3>How to determine the mole of nitrogen</h3>
- Volume (V) = 100 mL = 100 / 1000 = 0.1 L
- Pressure (P) = 700 mmHg
- Temperature (T) = 250 K
- Gas constant (R) = 62.364 torr.L/Kmol
- Number of mole (n) =?
Using the ideal gas equation, the mole of nitrogen can be obtained as follow
PV = nRT
n = PV / RT
n = (700 × 0.1) / ( 62.364 × 250)
n = 0.00448 mole
<h3>How to determine the mass of nitrogen</h3>
- Mole of nitrogen = 0.00448 mole
- Molar mass of nitrogen = 28 g/mol
- Mass of nitrogen = ?
Mass = mole × molar mass
Mass of nitrogen = 0.00448 × 28
Mass of nitrogen = 0.125 g
<h3>How to determine the percentage of nitrogen</h3>
- Mass of nitrogen = 0.125 g
- Mass of compound = 0.35 g
- Percentage of nitrogen =?
Percentage = (mass of element / mass of compound) × 100
Percentage of nitrogen = (0.125 / 0.35) × 100
Percentage of nitrogen = 35.71%
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Answer:
The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.
Explanation: Both mitochondria and chloroplasts are similar to bacteria in size, and like bacteria, they reproduce by dividing in two. Most important, both mitochondria and chloroplasts contain their own DNA, which encodes some of their components. The mitochondrial and chloroplast DNAs are replicated each time the organelle divides, and the genes they encode are transcribed within the organelle and translated on organelle ribosomes. Mitochondria and chloroplasts thus contain their own genetic systems, which are distinct from the nuclear genome of the cell. Furthermore, the ribosomes and ribosomal RNAs of these organelles are more closely related to those of bacteria than to those encoded by the nuclear genomes of eukaryotes.
Answer:
Physical properties
Atomic mass: 55.845
Density: 7.87 g/cm3
Group: Transition metals
Electrons: [Ar] 3d6 4s2
Melting point: 1811 K
Boiling point: 3134 K
Discovered: Ancient times
Explanation:
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Answer:
The answer to your question is 175 gallons
Explanation:
Data
60% antifreeze solution volume = ? = x
25% antifreeze solution volume = 25%
Final concentration 50%
Process
0.6x + 0.25(70) = 0.5(70 + x)
Simplification
0.6x + 17.5 = 35 + 0.5x
0.6x - 0.5x = 35 - 17.5
0.1x = 17.5
x = 17.5/0.1
Result
x = 175 gallons
