3 years ago

What is the best definition for the term 'peer review?'

Biology

1 answer:

otez555 [7]3 years ago

8 0

A. When you are given of review of how well you by your co workers

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How is enthalpy used to predict whether a reaction is endothermic or exothermic?

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Answer:

$329.48 KJ/mol$ heat is released by the combustion of $2 mol$ of methane

Explanation:

The value of enthalpy determines whether the reaction is exothermic or endothermic. If the enthalpy change is positive, then the reaction is endothermic (heat or energy released) and if the enthalpy change is negative then the reaction is exothermic (heat or energy absorbed).

$2CH_4(g)+4O_2(g) => 2CO_2(g)+4H_2O(g)$

$\Delta H \ reaction=[ 2(\Delta HfCO_2)+ 4(\Delta HfH_2O)]-[2(\Delta HfCH_4)+4(\Delta HfO_2)]$

= $2 ( -(393.5 KJ)/mol)-[2( -74.6 KJ/mol)+4(-241.82 KJ/mol)]$

$= -787 KJ/mol-[ -149.2 KJ/mol-967.28 KJ/mol]$

$= -787 KJ/mol+1116.48 KJ/mol$

$=329.48 KJ/mol$

In this question, the enthalpy of formation has positive value and hence the reaction is endothermic in which the heat is released.

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Biologists classify organisms in order to make them easier to find and understand.

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True
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The _____ method can help resolve problems logically. theoretic scientific controlled inquiry

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The answer is C. The Scientific Method is the method used whenever you want to explain or figure out anything scientifically. It involves hypothesis, experiments, and conclusions

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Plasma cells contain a large golgi apparatus and large amounts of rough endoplasmic reticulum. How is the presence of these orga

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Like the plasma membrane, organelle membranes function to keep the inside "in" and the outside "out."

Explanation:

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What two things can you tell from each word of an air masses' name?

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Option A) humidity and temperature

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