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irina1246 [14]
2 years ago
10

After analyzing rock core samples in an area with frequent earthquakes, many geologists believe a severe earthquake will occur i

n the area in the next 50 to 80 years. Other geologists, however, believe that such a prediction cannot be determined from the data collected. If these two groups of scientists have access to the same data, how can they form such different hypotheses?
A. Geologists manipulate data to fit their hypotheses, which results in different conclusions.

B. Scientific predictions must list every possible outcome to make sure that they are never incorrect.

C. Geologists have different specialties that can cause them to interpret data differently.

D. Scientific hypotheses need to be proven many times, so predictions of earthquakes are probably incorrect.
Chemistry
2 answers:
madreJ [45]2 years ago
6 0
B. Scientific predictions must list every possible outcome to make sure that they are never incorrect.
34kurt2 years ago
6 0

Answer: C. Geologists have different specialties that can cause them to interpret data differently.

Explanation:

The data is the outcome of a research study that is obtain after the implementation of the experimental methodology or by direct observation. The interpretation of data can vary among the scientists as they may have different perspective, knowledge and experience.

Thus according to the given situation, on the examination of rock samples in an area which exhibit frequent earthquakes, one type of geologists believe that a severe earthquake will occur and others believe that the prediction cannot be known by the data. This is indicating towards the fact that geologists in the given study may have different expertise, knowledge and perception which make them to interpret the data differently.

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devlian [24]

Answer : The standard enthalpy change for the combustion of CO(g) is, -283 kJ/mol

Explanation :

According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.

According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.

The combustion of CO will be,

CO(g)+\frac{1}{2}O_2(g)\rightarrow CO_2(g)    \Delta H_{rxn}=?

The intermediate balanced chemical reaction will be,

(1) C(s)+\frac{1}{2}O_2(g)\rightarrow CO(g)     \Delta H_1=-110.5kJ/mol

(2) C(s)+O_2(g)\rightarrow CO_2(g)     \Delta H_2=-393.5kJ/mol

Now we are reversing reaction 1 and then adding both the equations, we get :

(1) CO(g)\rightarrow C(s)+\frac{1}{2}O_2(g)     \Delta H_1=110.5kJ/mol

(2) C(s)+O_2(g)\rightarrow CO_2(g)     \Delta H_2=-393.5kJ/mol

The expression for enthalpy change for the reaction will be,

\Delta H_{rxn}=\Delta H_1+\Delta H_2

\Delta H_{rxn}=(110.5)+(-393.5)

\Delta H_{rxn}=-283kJ/mol

Therefore, the standard enthalpy change for the combustion of CO(g) is, -283 kJ/mol

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The energy required to remove an electron from an atom is called ionization energy.

The ionization energy largely depends on the size of the nuclear charge. The larger the size of the nuclear charge, the higher the ionization energy because it will be more difficult to remove an electron from the atom owing to increased electrostatic attraction between the nucleus and orbital electrons.

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2 years ago
c) A substance has a high melting point and conducts electricity. What type of structure does it have
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