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Sladkaya [172]
3 years ago
9

Describe the relationship between predator and prey in a balanced ecosystem. Please hellppp.

Chemistry
1 answer:
Umnica [9.8K]3 years ago
3 0

Answer:without predators, to keep prey from producing too many and over eating, the ecosystem suffers as there isn’t enough for the prey themselves to eat.

Explanation:

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What would the mass of 7 red apples be in kilograms?
Bogdan [553]

Answer:

I think it would be at 0.7 kg mass of the sun

8 0
3 years ago
What is a mole? in your own words. <br> (6.02x10^23)
Luda [366]

Answer:

Like all units, a mole has to be based on something reproducible. A mole is the quantity of anything that has the same number of particles found in 12.000 grams of carbon-12. That number of particles is Avogadro's Number, which is roughly 6.02x1023. 1  A mole of carbon atoms is 6.02x1023 carbon atoms

Explanation:

7 0
3 years ago
A 20g sample of iron at a temperature of 120oC is placed into a container of water. There are 300 milliliters of water in the co
galben [10]

Answer:

30.63 °C will be the final temperature of the water.

Explanation:

Heat lost by iron will be equal to heat gained by the water

-Q_1=Q_2

Mass of iron = m_1=20 g

Specific heat capacity of iron = c_1=0.444 J/g^oC

Initial temperature of the iron = T_1=120^oC

Final temperature = T_2=T

Q_1=m_1c_1\times (T-T_1)

Volume of water = 300 ml

Density of water = 1 g/mL

Mass of water= m_2=300 mL\times 1 g/mL = 300 g

Specific heat capacity of water= c_2=4.184 J/g^oC

Initial temperature of the water = T_3=30^oC

Final temperature of water = T_2=T

Q_2=m_2c_2\times (T-T_3)

-Q_1=Q_2

-(m_1c_1\times (T-T_1))=m_2c_2\times (T-T_3)

On substituting all values:

we get, T =  30.63°C

30.63 °C will be the final temperature of the water.

4 0
3 years ago
The following statements all describe changes in matter. Some of these changes are physical, and some are chemical. Select the s
GenaCL600 [577]

The change of the statue of liberty from copper to green is an example of a chemical change.

<h3>Physical and chemical change</h3>

A physical change does not involve the formation of new substances and the composition of the substance does not change. However, in a chemical change, a new substance is formed and the composition of the substance changes.

The statement that reflect a chemical change is;

  • The Statue of Liberty’s metal tarnishes from copper to green.

Learn more about physical and chemical change: brainly.com/question/13316655

8 0
2 years ago
If it takes 65.3 min for the concentration of a reactant to drop to 20.0% of its initial value in a first-order reaction, what i
Anna007 [38]

65.3 \div 20

equals 3.265

6 0
3 years ago
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