3 years ago

Why did the United States government set aside land for the first national parks?

Chemistry

1 answer:

Elan Coil [88]3 years ago

3 0

B) They worries people would destroy the animals and land.

You might be interested in

_Cl2 + _NaBr → _NaCl + _Br2<br><br> Answer: 1,2,2,1

nlexa [21]

1 2 2 1 is the answer so u are correct

4 0

3 years ago

The electromagnetic force is

Debora [2.8K]

The electromagnetic force is attractive for unlike charges and repulsive for like charges

8 0

3 years ago

Read 2 more answers

Which of the following is the term for the heaviness on something's surface that exerts a force over an area? a. force b. pressu

Elan Coil [88]

Answer:

i think the answer is pressure

3 0

2 years ago

Read 2 more answers

4.41 g of propane gas (C3H8) is injected into a bomb calorimeter and ignited with excess oxygen, according to the reaction below

gayaneshka [121]

Answer : The heat of the reaction is -221.6 kJ

Explanation :

Heat released by the reaction = Heat absorbed by the calorimeter

$q_{rxn}=-q_{cal}$

$q_{cal}=c_{cal}\times \Delta T$

where,

$q_{rxn}$ = heat released by the reaction = ?

$q_{cal}$ = heat absorbed by the calorimeter

$c_{cal}$ = specific heat of calorimeter = $97.1kJ/^oC=97100J/^oC$

$\Delta T$ = change in temperature = $(T_{final}-T_{initial})=(27.282-25.000)=2.282^oC$

Now put all the given values in the above formula, we get:

$q_{cal}=(97100J/^oC)\times (2.282^oC)$

$q_{cal}=221582.2J=221.6kJ$

As, $q_{rxn}=-q_{cal}$

So, $q_{rxn}=-221.6kJ$

Thus, the heat of the reaction is -221.6 kJ

6 0

3 years ago

Why don't satellites in orbit fly into space?

Alex787 [66]

This is a question similar to one wrestled with by Newton himself, who didn't understand why the planets didn't fall into each other. The reason satellites don't fly into space is because they are being pulled towards the planet by the planet's gravity.
<span />

7 0

3 years ago