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2 years ago

1) What do you think made Rachel Carson's book, Silent Spring, so inspiring to readers?

1 answer:

7 0

Because it uncovers a truth many don’t see in science theory’s and thing that people might not have know giving them the curiosity to try something new and learn something new.

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What was the main reason for creating the EPA?

daser333 [38]

The correct answer is A.

Explanation:

EPA History. Born in the wake of elevated concern about environmental pollution, EPA was established on December 2, 1970 to consolidate in one agency a variety of federal research, monitoring, standard-setting and enforcement activities to ensure environmental protection.

I took this quiz and got it correct

4 0

3 years ago

Read 2 more answers

In which part of the nephron are sodium and chloride ions actively reabsorbed?

Eva8 [605]

The part of the nephron that In which part of the nephron are sodium and chloride ions are actively reabsorbed is the Henle's loop. It is the portion of a nephron that leads from the proximal convoluted tubule to the distal convoluted tubule. It's main function is to make a concentration gradient in the medulla of the kidney.

3 0

3 years ago

Do you think a solar furnace could work well where you live?

swat32

<h3>Answer:</h3>

i thank we could use one

Explanation:because we don't really have cold weather in okc

hope it helps ☺

7 0

3 years ago

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

Radda [10]

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.

3 0

3 years ago

Men can produce sperm throughout their adulthood because_____. (1pts)

kvasek [131]

Men can produce sperm throughout their adulthood because their reproductive organs and glands are fully developed. During their childhood and adolescence the glands and organs are not functional for reproductive purposes.

8 0

3 years ago