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Nikitich [7]
3 years ago
13

Richard is teaching his son, Cody, to throw darts. At first, he gives Cody a piece of candy each time the dart hits the dartboar

d. As time progresses, Richard starts only rewarding Cody when the dart hits one of the inner rings of the dartboard. Finally, Richard only rewards Cody when he hits the bullseye. This example best illustrates the concept of ________.
Chemistry
1 answer:
Vlad1618 [11]3 years ago
7 0

Answer:

Shaping

Explanation:

Shaping is a term used to describe the process where a response is stimulated through small rewards or punishments. In other words, shaping refers to a situation where a person is gradually trained to establish some kind of behavior or skill through small incentives. An example of this can be seen in the question above, where a parent shapes his child's aim by offering candy whenever he hits the target.

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The term _____ describes a substance that can act as both an acid and a base.
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4 years ago
A chemist wishing to do an experiment requiring 47-Ca2+ (half-life = 4.5 days) needs 5.0 μg of the nuclide. What mass of 47-CaCO
NARA [144]

Answer:

5.8μg

Explanation:

According to the rate or decay law:

N/N₀ = exp(-λt)------------------------------- (1)

Where N = Current quantity,  μg

            N₀ = Original quantity, μg

             λ= Decay constant day⁻¹

              t =  time in days

Since the half life is 4.5 days, we can calculate the  λ from (1) by  substituting N/N₀ = 0.5

0.5 = exp (-4.5λ)

ln 0.5  = -4.5λ

-0.6931 = -4.5λ

λ =   -0.6931 /-4.5

  =0.1540 day⁻¹

Substituting into (1)  we have :

N/N₀ = exp(-0.154t)----------------------------- (2)

To receive 5.0 μg of the nuclide with a delivery time of 24 hours or 1 day:

N = 5.0 μg

N₀ = Unknown

t = 1 day

Substituting into (2) we have

[5/N₀]   = exp (-0.154 x 1)

    5/N₀        = 0.8572

N₀  =  5/0.8572

     =    5.8329μg

    ≈     5.8μg

The Chemist must order 5.8μg  of 47-CaCO3

6 0
3 years ago
I need help with number 4 I mean k think I'm right
adell [148]
Its b because it explains it better than a waterfall does
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4 years ago
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