Answer:
The percent error of the thermometer is 3%
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Answer:
Ca(OH)2 --> Ca2+ + 2OH-
Explanation:
Calcium hydroxide is sparingly soluble in water. It dissociates to give the following:
The net ionic equation :
Ca(OH)2 + H2O --> Ca2+ + 2OH- + H2O
Since, H2O doesn't affect the overall reaction, therefore;
Ca(OH)2 --> Ca2+ + 2OH
A. atoms because they are all matter and matter is made up of atoms
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The percent yield of the combustion of Nitrogen Oxide in the plant is
65,22%The chemical equation for the reaction is:
2NO + O₂ → 2NO₂
To calculate the percent yield we need to calculate the theoretical yield, using the following conversion factor:
Now we use the following equation to calculate the percent yield:
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In a food chain we arrange the energy in the form of a pyramid.
The producers are on the base of pyramid and then consumers are towards peak.
in the given food chain grass is being eaten by grasshopper which are food of birds.
Grasshoppers are also eaten up by Hawks. so both brids and hawks are feeding upon grasshoppers thus the amount of energy transferred from the grass to the grasshopper is the same as the amount of energy transferred from the grasshopper to the bird.