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xz_007 [3.2K]
3 years ago
13

The process of evaporation describes which of the following changes of state?

Chemistry
1 answer:
Anna35 [415]3 years ago
6 0
The change in state from Liquid ➡ gas describes the process of evaporation.
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Question 3 (1 point)
Hoochie [10]

Answer:

50 mol

Explanation:

Mass of methane = 800 g

Number of moles of CO₂ produced = ?

Solution:

Chemical equation:

CH₄ + 2O₂      →      CO₂ + 2H₂O

Number of moles of methane:

Number of moles = mass/molar mass

Number of moles = 800 g/ 16 g/mol

Number of moles = 50 mol

Now we will compare the moles of methane and carbon dioxide from balanced chemical equation.

                CH₄        :         CO₂

                   1           :          1

                 50          :        50

4 0
3 years ago
Endergonic reactions:
guapka [62]

Answer : The correct option is, (b) occur when there is more free energy in the reactants than the products.

Explanation :

Endergonic reactions : It i defined as the reaction in which the energy is absorbed during the reaction.

In endergonic reactions, the Gibbs free energy of product is lower than the reactants. That means, ΔG > 0 and the reaction is non-spontaneous.

Exergonic reactions : It i defined as the reaction in which the energy is released during the reaction.

In exergonic reactions, the Gibbs free energy of product is greater than the reactants. That means, ΔG < 0 and the reaction is spontaneous.

Hence, the endergonic reactions is occur when there is more free energy in the reactants than the products.

6 0
3 years ago
How does fluorine electronegativity compare to the electronegativity of oxygen and chloride?
Artemon [7]

Answer:

Cl EN < O EN < F EN

Explanation:

Electronegativity is a periodic property that indicates the tendency of an atom to attract electrons when combined with another element. It is very useful for predicting the type of bonding of compounds, so it is not possible to talk about electronegativity in elements in a fundamental state.

In the periodic table the electronegativity increases diagonally and the values ​​were established in the so-called Pauling scale.  

It is expected that elements with high electron affinity and high ionization energy possess considered electronegativity, so the group of nonmetals have high electronegativity, in fact flour is the most electronegative element

7 0
3 years ago
You are given the reaction Cu + HNO3 → Cu(NO3)2 + NO + H2O. Half-reactions: First: 3 upper C u right arrow 3 upper C u superscri
nexus9112 [7]

Answer: It is the first one. First: 3 upper C u right arrow 3 Upper C u superscript 2 plus, plus 6 e superscript minus. Second: 2 upper N superscript 5 plus, plus 6 e superscript minus right arrow 2 upper N superscript 2 plus.

Explanation:

Correct

4 0
3 years ago
Read 2 more answers
What is the difference between sexual and asexual reproduction
Airida [17]
Asexual reproduction takes/or inherits one parent's genes, because it only involves one organism.
Sexual reproduction requires both a male and female. 
4 0
3 years ago
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