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arsen [322]
3 years ago
6

What role does a lion play in an ecosystem?

Chemistry
1 answer:
Aleks04 [339]3 years ago
5 0
They are the predator
Known as the “chief predator of their habitat
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45.5 g of ice is heated from -25 degrees celsius to 150 degrees celcius. Calculate the total amount of heat required for the ent
tino4ka555 [31]

Answer:

Q = 16163.88 Joules

Explanation:

Given the following data;

Initial temperature, T1 = -25°C

Final temperature, T2 = 150°C

Mass = 45.5 g

Specific heat capacity of ice = 2.03 J/g°C

To find the quantity of heat required;

Heat capacity is given by the formula;

Q = mcdt

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt = T2 - T1

dt = 150 - (-25)

dt = 150 + 25

dt = 175°C

Substituting into the formula, we have;

Q = 45.5 * 2.03 * 175

Q = 16163.88 Joules

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3 years ago
Can someone shorten these definitions?
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5 0
3 years ago
Which of the following elements has the most properties in common with iron (Fe)?
Fudgin [204]
If my memory serves me well, the following element which has the most properties in common with iron (Fe) is definitely <span>Osmium (Os) because they are stand for the same group! 
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8 0
3 years ago
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What is the molecular weight (rmm) of NaOH?<br> 40<br> 20<br> 50<br> 60
Molodets [167]

Answer: A/40 it is actually 39.997 but since that is not an answer they rounded up

Explanation:

4 0
3 years ago
What does Gibbs free energy depend on? O A. It depends on the rate and quantity of the reaction. O B. It depends on the activati
Oksana_A [137]

Answer:

C: It depends on the entropy and enthalpy of the reaction.

Explanation:

Gibbs free energy is defined as the maximum amount of non-expansion work that can be gotten from a closed system. Now this work is usually done in place of the system’s internal energy and Energy that is not extracted as work is usually exchanged with the immediate surroundings in the form of heat.

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3 years ago
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