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
Convert 3.00 moles of MgO to moles of Fe2O3
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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Answer:
S8 + 12O2 ---> 8SO3
Explanation:
S8 + 12O2 ---> 8SO3
Answer:
The temperature of the water stayed at because the temperature of a pure water does not increase at its boiling point, . 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 ( ).
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.