Answer:
Explanation:
According to the given reaction,
heat released by thecombustion of 2 molecules of Methanol,
we know that molecular mass of Methanol,
∴12 gram of methanol =
we know 1 mole =
so,
Heat from the combustion of :
<u>Now the mass of water that can be heated from 23.5°C to 88.2°C :</u>
Answer:
a) M₂ ( the object that is stationary) b) 3 times c) the velocity is to the left
Explanation:
let the object in motion = M₁, object stationary = M₂, the initial velocity of the M₁ = U₁, since the second object is at rest U₂ = 0, final velocity of the M₁ = V₁ and final velocity for M₂ = V₂
Using conservation law of momentum:
M₁U₁ = M₁V₁ + M₂V₂ since the second body is at rest
also
V₂ = U₁ / 2 and the collision is elastic meaning
U₁ = V₂ - V₁
U₁ = U₁ / 2 - V₁
V₁ = -U₁/2
substitute V₁ into the first equation
M₁U₁ = M₁V₁ + M₂V₂
M₁U₁ = M₁ (-U₁/2) + M₂ ( U₁/2)
collect the like terms
M₁U₁ + M₁ (U₁/2) = M₂(U₁/2)
3/2(M₁ U₁) = M₂ (U₁/2)
divide both side by U₁/2
3 M₁ = M₂
b) M₂ = 3 M₁
M₂ is three times M₁
c) V₁ = -U₁/2
since V₁ is negative, the velocity will be to the left
Electrons, Nutrons, and Protons
The answer is reminiscence.
One method of coping with change is through reminiscence. There are several positive benefits of engaging in reminiscence. The present may be depressing or very unsatisfactory. By recalling a happier time, an older person may derive some contentment or the ability to endure the present.