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Inga [223]
3 years ago
8

Why do scientists need control groups?

SAT
1 answer:
lubasha [3.4K]3 years ago
3 0

Explanation:

A scientific control group is an essential part of many research designs, allowing researchers to minimize the effect of all variables except the independent variable. The control group, receiving no intervention, is used as a baseline to compare groups and assess the effect of that intervention.

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What is the median of these data? 48, 60, 22, 84, 36.
Setler [38]

Answer:

48

Explanation:

You just put the numbers in order from least to greatest and its the middle one. if there's an even amount of numbers, you add the middle two and divide by 2

7 0
2 years ago
The fact that human aggression varies widely from culture to culture most strongly suggests that it is not
12345 [234]

The fact that human aggression varies widely from culture to culture most strongly suggests that it is not instinctive behavior.

<h3>What is instinctive behavior?</h3>

An instinctive behavior  can be regarded as the  action  that can be found in an organism  which is attributed to  performed by all members of their species.

Theses behaviors are  fixed action pattern (FAP)  which do take place  result of a specific stimulus.

It should be noted that Instinctive behaviors are innate abilities  which could be from birth onward and are not learned behaviors, hence, The fact that human aggression varies widely from culture to culture most strongly suggests that it is not instinctive behavior.

Learn more about instinctive behavior  on:

brainly.com/question/12101480

#SPJ1

8 0
1 year ago
For the galvanic (voltaic) cell fe(s) + mn²⁺(aq) ⟶ fe²⁺(aq) + mn(s) (e° = 0.77 v at 25°c), what is [fe²⁺] if [mn²⁺] = 0.050 m an
Nuetrik [128]

The concentration of Iron in the galvanic (voltaic) cell Fe(s) + Mn²⁺(aq) ⟶ Fe²⁺(aq) + Mn(s) is 0.02297 M.

<h3>What is the Nernst Equation?</h3>

The Nernst equation enables us to identify the cell potential(voltage) in presence of non-standard conditions in a galvanic cell. It can be expressed by using the formula:

\mathbf{E_{cell} = E_o - \dfrac{0.059}{n} \times log \dfrac{[Fe^+]}{[Mn^{2+}]}}

where;

  • n = Number of electrons = 2
  • \mathbf{E_o} = Initial voltage = 0.77 V
  • \mathbf{E_{cell}} = Cell voltage = 0.78 V
  • \mathbf{[Mn^{2+}]} = Manganese concentration = 0.050 M

Replacing the values into the above equation, we have:

\mathbf{0.78 = 0.77 - \dfrac{0.059}{2} \times log \dfrac{[Fe^{2+}]}{[0.050]}}

\mathbf{0.78 -0.77= -0.0296\times log \dfrac{[Fe^{2+}]}{[0.050]}}

\mathbf{log^{-1} (-0.3378) = \dfrac{[Fe^{2+}]}{[0.050]}}

\mathbf{Fe^{2+} = (0.4594\times 0.050 )\ M}

\mathbf{Fe^{2+} =0.02297 \ M }

Learn more about using the Nernst equation here:

brainly.com/question/24258023

6 0
2 years ago
Which of the following is not an advantage of flexibility?.
juin [17]

Answer:

improved energy production

Explanation:

3 0
2 years ago
Maria, a u. S. Psychologist uses the dsm-5 in her practice, but her cousin, ava, lives in spain and often uses the ________ for
qwelly [4]

Answer:

B. International Classification of Diseases

Explanation:

4 0
2 years ago
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