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Soloha48 [4]
2 years ago
7

Sedimentary rocks form because of all of the following EXCEPT ____. a. sediments becoming pressed or cemented together b. crysta

ls solidifying from magma c. sediments forming from solution d. water evaporating, leaving crystals behind
Biology
1 answer:
irina1246 [14]2 years ago
5 0

Answer:

a

Explanation:

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Radda [10]

<u>Answer:</u>

<em>329.48 KJ/mol heat is released by the combustion of 2 molof methane</em>

<u>Explanation:</u>

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

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

3 0
3 years ago
What is the common function of leaves?
Black_prince [1.1K]

Answer:

Por medio de las hojas, las plantas realizan la fotosíntesis, respiran y producen los alimentos. La respiración se produce durante el día y la noche; para ello, las plantas toman el oxígeno del aire y desprenden dióxido de carbono.

Explanation:

Por medio de las hojas, las plantas realizan la fotosíntesis, respiran y producen los alimentos. La respiración se produce durante el día y la noche; para ello, las plantas toman el oxígeno del aire y desprenden dióxido de carbono.

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2 years ago
What theory explains why the Uranian system is on its side?
8090 [49]

Answer:

Astronomers have always assumed that Uranus must have been knocked onto its side by a collision. Now a new idea suggests that the planet's remarkable tilt could have another explanation.

Explanation:

I just know it

5 0
2 years ago
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What is the main function of carbohydrates in living organisms
Minchanka [31]
Mainly carbohydrates our body stored energy as glycogen.
3 0
3 years ago
Which factor is a major influence on climate?
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Answer:

A

Explanation:

A because water is a essential resource to humans and all types of life.

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