The car's velocity after 5s : 10 m/s
<h3>Further explanation</h3>
Given
velocity=v=72 km/h=20 m/s
time=t = 5 s
acceleration=a = -2 m/s²
Required
velocity after 5s
Solution
Straight motion changes with constant acceleration
vf=final velocity
vi = initial velocity
Input the value :
The car is decelerating (acceleration is negative) so that its speed decreases
Answer:
1 mol contains 6.022*10^23 molecules 0.36 moles contain 0.36 * 6.022*10^23 = 2.2 *10^23 molecules
Explanation:
Answer:
The most consistent mechanism is SN1.
Explanation:
The solvolysis of tert-butyl iodide in methanol will arise by the SN1 mechanism.
The reason for that is due the geometric structure of tert-butyl. The tertiary structure allows the formation of a stable carbocation, after the loss of the iodide ion. The carbocation will then be attacked by methanol molecules forming an eter.
The mass of substance consumed in g to provide a lethal dose is 62.496 g
The substance has an LD50 of 336 mg/kg. We require the number of grams of the substance that a 186 kg person would consume to reach the probable lethal dose.
So, mass of substance consumed = lethal dose × mass of person
lethal dose = 336 mg/kg and mass of person = 186 kg
mass of substance consumed = lethal dose × mass of person
mass of substance consumed = 336 mg/kg × 186 kg
mass of substance consumed = 62496 mg
Converting to g, we have
mass of substance consumed in g = 62496 mg × 1 g/1000 mg = 62.496 g
So, the mass of substance consumed in g to provide a lethal dose is 62.496 g
Learn more about lethal dose here:
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