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zzz [600]
3 years ago
11

Which of these would be directly related to the science of ecology?

Chemistry
2 answers:
Leviafan [203]3 years ago
5 0
The answer is D:  studying how the mayfly population affects the number of trout in a stream <span> As the science of ecology studies interactions between individual organisms and their environments.</span>
stepan [7]3 years ago
5 0

The answer is:

D.) studying how the mayfly population affects the number of trout in a stream

If its correct, I'm happy to help XD

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When a solid melts, thermal energy is removed from the solid is that true or false?
Sloan [31]
The answer to this is no, thermal energy is absorbed
8 0
4 years ago
H3C6H507(aq) + 3NaHCO3(aq) - Na3C6H5O7(aq) + 3C02(g) + 3__
zavuch27 [327]

Answer: 3<u> H₂O</u>

<u />

Explanation:

This is an example of a common chemical reaction

ACID + CARBONATE --> SALT + WATER + CARBON DIOXIDE which implires

CITRIC ACID  + SODIUM BICARBONATE ----> SODIUM CITRATE + WATER + CARBON DIOXIDE .  

The full chemical equation is  given by

H3C6H5O7(aq)  + 3NaHCO3(aq) --> Na3C6H5O7(aq) + 3CO2(g) + 3<u>H2O</u>(l)

The reaction produces a  fizz due to the  release of  carbon dioxide which can be also seem when an Alka-Seltzer® tablet is dissolved in water.

6 0
4 years ago
Read 2 more answers
How many atoms are in 12 moles of iron?
Murljashka [212]

Explanation: The atomic mass of iron (Fe) is 55.85 amu. The atomic mass of radium (Ra) is 226 amu. One mole of atoms of any element contains 6.022 X 1023 atoms, regardless of the type of element. The mass of one mole of an element depends on what that element is, and is equal to the atom mass of that element in grams.

3 0
3 years ago
Clary ran 20 miles in four hours. What was her average speed?
Nady [450]

5 miles per hour

20/4=5

4 0
3 years ago
Read 2 more answers
Volume of a gas at STP, if its volume is 80.0 mL at 1.08 atm and –12.5oC.
vodomira [7]

Answer:

90.5mL is the volume of the gas at STP

Explanation:

It is possible to find volume of a gas when conditions of temperature and pressure change using combined gas law:

\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}

Where P is pressure, V is volume and T is absolute temperature. 1 is initial conditions and 2 final conditions.

If initial conditions are 1.08atm, 80.0mL and absolute temperature is (-12.5°C + 273.15) = 260.65K.

And STP are 1atm of pressure and 273.15K of absolute temperature. Replacing:

\frac{1.08atm80.0mL}{260.65K} =\frac{1atmV_2}{273.15K}

V₂ = <em>90.5mL is the volume of the gas at STP</em>

7 0
3 years ago
Read 2 more answers
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