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ExtremeBDS [4]
3 years ago
14

I NEED HELP IN ENVIRONMENTAL SCIENCE PLEASE

Biology
2 answers:
Anna [14]3 years ago
4 0
The answer would be B.
melamori03 [73]3 years ago
4 0

Answer:

B

Explanation:

The passage of the Federal Water Pollution Control Acts and the Clean Water Act.

Hope this helped!

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Which sequence list the hereditary material found inside cells form smallest unit to the largest unit?
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Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

The <span>sequence list the hereditary material found inside cells form smallest unit to the largest unit is DNA</span>
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Which of the following is the correct sequence in the life cycle of a low-mass star?
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Which of the following best compares the factors affecting blood flow that directly cause heart attack and stroke?
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3 years ago
How is enthalpy used to predict whether a reaction is endothermic or exothermic?
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
Can you PLEASE HELP ?!
Lapatulllka [165]

Answer:

fish

Explanation:

abc one two three

4 0
3 years ago
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