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Sergeu [11.5K]
3 years ago
12

How much percent of energy presents at one level is available to the next trophic level

Chemistry
1 answer:
sergij07 [2.7K]3 years ago
4 0
When a herbivore gets eaten by a carnivore, only 10% of energy gets transferred to the next trophic level.

This explains why food chains cannot go on indefinitely.
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A 251 g strip of glass wool is used to insulate a reaction flask. During the reaction the temperature of the glass wool increase
andrew11 [14]

Answer:

8.9 KJ

Explanation:

Given data:

Mass of strip = 251 g

Initial temperature = 22.8 °C

Final temperature = 75.9 °C

Specific heat  capacity of granite = 0.67 j/g.°C

Heat absorbed = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 75.9 °C - 22.8 °C

ΔT = 53.1 °C

Now we will put the values in formula,

Q = 251 g × 0.67 j/g.°C × 53.1 °C

Q = 8929.8 J

Jolue to KJ conversion.

8929.8J ×1 KJ / 1000 J

8.9 KJ

7 0
3 years ago
What are the particles of an atom called that are in the outermost energy level?
densk [106]
The atoms on the outermost level are called electrons.
8 0
3 years ago
In an experiment, a student was assigned to find the formula of an unknown hydrate that weighed 15.67g. The anhydrate, XCO3 (mol
meriva

Answer:

5.0 moles of water per one mole of anhydrate

Explanation:

To solve this question we must find the moles of the anhydrate. The difference in mass between the dry and the anhydrate gives the mass of water. Thus, we can find the moles of water and the moles of water per mole of anhydrate:

<em>Moles Anhydrate:</em>

7.58g  * (1mol / 84.32g) = 0.0899 moles XCO3

<em>Moles water:</em>

15.67g - 7.58g = 8.09g * (1mol / 18.01g) = 0.449 moles H2O

Moles of water per mole of anhydrate:

0.449 moles H2O / 0.0899 moles XCO3 =

5.0 moles of water per one mole of anhydrate

6 0
2 years ago
when your tires heat up from driving on a hot road the pressure inside of them increase. this is an example of which gas law
sergiy2304 [10]

Le Châtelier's Principle

This principle states that as temperature increases the pressure must also increase to remain at equilibrium

6 0
3 years ago
How many moles of MgS2O3 are in 201g of the compound?
Tamiku [17]
 <span>divide the 201g by the mol mass of the compound. Just add up the masses of the various element</span>
8 0
3 years ago
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