The nitrogen cycle is completed with the process of what ?

Answers

Answer 1

Answer:

Answer:

nitrogen fixation

Explanation:

nitrogen fixation is the process through which the nitrogen fixing rhizobium bacteria present in the root nodules of leguminous plants I fixes the nitrogen present in the air into the soil

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List three evidences of physical and chemical change. ( If you know only one or two please write them anyways please)

Answers

Physical: ripping paper, braking a stick, cake batter mixing

Chemical: burning paper, spoiled milk, a penny turning green

2FeCl3 + MgO -> Fe2O3 + 3MgCl2
Convert 3.00 moles of MgO to moles of Fe2O3

Answers

71.8 g of iron (III) oxide (Fe₂O₃) were produced from 3 moles of magnesium oxide (MgO).

Explanation:

We have the following chemical reaction:

2 FeCl₃ + 3 MgO → Fe₂O₃ + 3 MgCl₂

We see from the chemical reaction that 3 moles of magnesium oxide (MgO) will produce 1 mole of iron (III) oxide (Fe₂O₃).

number of moles = mass / molar weight

mass = number of moles × molar weight

mass of Fe₂O₃ = 1 × 71.8 = 71.8 g

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number of moles

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Steps of scientific inquiry?

Answers

1. Figure out a problem
2. Research
3. Hypothesis
4. Experiment
5. Analyze results
6. Conclusion
7. Communicate your results

Hope This Helps. :D

1 Ask a question related with your topic
2 Research data of the topic
3 Construct logical Hypothesis
4 Test your Hypothesis to prove if your hypothesis was correct
5 Analyze your data and draw a Conclusion
6 Communicate your results to the science community

What is the balanced equation for S8 +O2 →SO3

Answers

Answer:

S8 + 12O2 ---> 8SO3

Explanation:

S8 + 12O2 ---> 8SO3

During an experiment a student measured the temperature of water while it boiled in a pot on a stove. The temperature of the water stayed at 100°C during the entire time that the water was boiling.

Answers

Answer:

The temperature of the water stayed at $100^(0) C$ because the temperature of a pure water does not increase at its boiling point, $100^(0) C$ . This is due to latent heat of vaporisation.

Explanation:

During a change of state of a substance, the temperature does not change due to latent heat of the substance. Latent heat is the amount of heat required to convert a unit mass of a substance from one state to another without a change in its temperature. There are two types of latent heat, latent heat of fusion anf latent heat of vaporisation.

So during the experiment, the water got to its boiling point and continues to boil at this constant temperature until it would change completely to steam at that temperature. After the conversion process, the temperature begins to increase.

The latent heat of vaporisation came into action during the process of boiling the water at constant temperature. That's why the temperature of the water did not increase even after reaching its boiling point ( $100^(0) C$ ).

Answer:

c,interpretation of the data

Explanation:

A good scientific explanation needs to be based on both data collected in an investigation and on the ability to interpret what the data means.

Normally, adding heat energy increases the temperature of a substance. However, during a phase change, the temperature of the substance stays constant. This happens because the heat energy is being used to change the phase of the matter instead of the temperature.

Gina pours some sugar in a hot pan. The sugar melts. She placesthe pan with the melted sugar in a cool place. The sugar hardens inone single piece. How does Gina's model compare to the way an actualigneous rock would form?

Answers

the sugar is melted like the magma then cooled to make the sugar hard like the magma cooling and hardening to for into a igneous rock

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