Answer:
Kepler- created laws of planetary motion
Galileo- discovered moons of Jupiter; published in Italian
Copernicus- revived Aristarchus heliocentric model
Explanation:
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Propene is an unsaturated hydrocarbon as it contains one double covalent bond. An unsaturated hydrocarbon would be a hydrocarbon molecule containing at least one double or triple covalent bond.
Answer:
a. True
Explanation:
Distillation process is a process that is used to separate the components or the substances from the liquid mixtures by using selectively boiling and condensation.
While fractional precipitation is a process which separates the ions from solution based on the different solubilities.
Therefore, the answer is true.
Answer: -
6 mg
Explanation: -
Initial amount N₀ = 192 mg
Half life = 6 hours.
Time given = 30 hours
Number of half lives = ![\frac{30 hours}{6 hours}](https://tex.z-dn.net/?f=%20%5Cfrac%7B30%20hours%7D%7B6%20hours%7D%20%20)
= 5
Amount present after 30 hours = N₀ x [
]![^{Number of half lives}](https://tex.z-dn.net/?f=%20%5E%7BNumber%20of%20half%20lives%7D%20%20)
Amount present after 30 hours = 192 mg x [
]
= 6 mg