How long does it take light to travel 2462 mi, the distance between LA and NY? Provide the answer in ms. (1 mi= 5280 ft, 1ft= 12
in., 1 in.= 2.54 cm)
Please go through this detail by detail because Chemistry is a really hard subject for me to understand. Thank You:)
Please go through this detail by detail because Chemistry is a really hard subject for me to understand. Thank You:)
2 answers:
The light takes 13,2073 ms to travel 2462 mi, the distance between LA and NY
<h3>Further explanation</h3>Regular straight motion is the motion of objects on a straight track that has a fixed speed
Formula used
S = distance = m
v = speed = m / s
t = time = seconds
Straight motion changes regularly is the straight motion of objects that have a fixed acceleration
Formula used
V = vo + at
Vt² = vo² + 2as
St = distance on t
vo = initial speed
vt = speed on t
a = acceleration
The distance that light travels can be considered using the principle of irregular straight motion because it has a constant speed
The speed of light itself is 3.10⁸ m / s
The distance between LA and NY = 2462 mi, so we convert the units to m
Because 1 mi = 5280 ft, 1ft = 12 in., 1 in. = 2.54 cm, then
2462 mi = 2462 mi x 5280 ft x 12 in x 0.0254 m
2462 mi = 3962204,928 m
We use the straight-line motion formula
S = v x t
t = S : v
t = 3962204,928 m : 3,108 m / s
t = 0.0132073 s
conversion to milisecon :
t = 0.0132073 s x 1000 ms
t = 13,2073 ms
<h3>Learn more</h3>
The distance of the elevator
resultant velocity
the average velocity
Keywords: light, distance, speed, time
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<h3><u>Full Question:</u></h3>
The following compound has been found effective in treating pain and inflammation (J. Med. Chem. 2007, 4222). Which sequence correctly ranks each carbonyl group in order of increasing reactivity toward nucleophilic addition?
A) 1 < 2 < 3
B) 2 < 3 < 1
C) 3 < 1 < 2
D) 1 < 3 < 2
<h3><u>Answer: </u></h3>The rate of nucleophilic attack of carbonyl compounds is 2<3 <1.
Option B
<h3><u>Explanation. </u></h3>Nucleophilic attack is explained as the attack of an electron rich radical to a carbonyl compound like aldehyde or a ketone. A nucleophile has a high electron density, so it searches for a electropositive atom where it can donate a portion of its electron density and become stable.
A carbonyl compound is a hybridized carbon atom with a double bonded oxygen atom in it. The oxygen atom pulls a huge portion of electron density from carbon being very electropositive.
In a ketone, there are two factors that make it less likely to undergo a nucleophilic attack than aldehyde. Firstly, the steric hindrance of two carbon groups being attached with the carbonyl carbon makes it harder for the nucleophile to approach. Secondly, the electron push by the carbon groups attached makes the carbonyl carbon a bit less electropositive than the aldehyde one. So aldehydes are more reactive towards a nucleophilic addition reaction.