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natka813 [3]
3 years ago
7

How do scientist determine by using frogs to study their environment

Chemistry
2 answers:
NemiM [27]3 years ago
7 0
To show there environment
Lilit [14]3 years ago
6 0
They use frogs because it easy to get and shows what is going on by what they eat what happened to them and other things.
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What is the pressure of 0.5 mol of nitrogen gas in a 5 L container at 203 K
vlada-n [284]

Answer:

=1.666 liters

Explanation:

1 mole of a has at standard temperature and pressure occupies a volume of 22.4 liters.

0.5 moles of nitrogen occupy a volume of (0.5 moles×22.4 dm³/mol)/ 1

=11.2 liters.

Standard pressure= 1 atmosphere (Atm)

Standard temperature = 273.15 Kelvin

According to Combined gas equation, P₁V₁/T₁=P₂V₂/T₂

Let us take the conditions under standard conditions as the reference, with the subscript 1 and the conditions under the 5L container to be scenario 2 with subscript 2.

Therefore P₂ =P₁V₁T₂/T₁V₂

Substituting for the values we get:

P₂= (1 atm× 11.2L ×203K)/ (273K×5L)

=1.666 atm

5 0
3 years ago
What changes occur in the nuclei of atoms involved in the reactions that fuel nuclear power plants?
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Nuclear fusion and nuclear fission are two different types of energy-releasing reactions that occur in the nuclei of an atom.
Here are the major differences between the two:

1. To differentiate the two, fission is the splitting of an atom into two or more smaller atoms while fusion is the conjoining or fusion of two or smaller atoms into larger one.

2.  Fission does not normally occur in nature while fusion occurs mostly in heavenly bodies such as the stars.

3.Fission produces highly radioactive particles that can be hazardous to both the living things and its habitat or environment while fusion is "clean energy" and "environmental friendly" meaning there are fewer radioactive particles are produced. But if a fission "trigger" is being used, there will  be radioactive particles produced.

Among the two nuclear changes, fission is widely used because this reaction produces heat in nuclear reactor. This heat is used to generate steam which operates the turbines to eventually produce electricity.
8 0
3 years ago
Determine the formula weight of Ca(no3)2
Zanzabum

Answer:

the formula is 164.088 g/mol

Explanation:

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It would be nice if someone HELPED. During an experiment, you observe that two charged balloons repel each other. When you bring
jeka57 [31]

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They are similarly charged, which is why they repel each other.

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2 years ago
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Describe examples of body language that show that you are actively listening
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Am

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