The percent error of Chemistry student : 7.4%
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Further explanation
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Given
40 °C measurement
Required
The percent error
Solution
% Error : difference between the theoretical value and the actual value
or
% Error : Absolute Error / Accepted Value
Absolute Error = Measured Value - Accepted Value
% Error for Chemistry student :
1. Subtract the measurement value with the accepted value
= 40 °C - 43.2 °C
= -3.2 °C
2. Divide by the accepted value, and multiply by 100
= |-3.2/43.2| x 100%
= 7.4%
The atomic number is the total number of protons in the nucleus. The mass number is the total number of particles in the nucleus. That includes the neutrons and the protons. So, the atomic number is 31. When you look at the element on the periodic table with a designated atomic number of 31, that would be Gallium, with a symbol of Ga. Mass number is 31 + 36 = 67. So, the answer is A.
I looked it up. The amplitude of a wave is a measure of the displacement of the wave from its resting position.
Answer: -
Substance A is carbon dioxide and Substance B is oxygen.
Explanation: -
Photosynthesis reaction involves the process of conversion of light energy of the sun into chemical energy by the green chlorophyll found in plants leaves.
The chemical equation for the process is
6 CO₂ +6 H₂O → C₆H₁₂O₆ + 6O₂
As we can see Carbon dioxide CO₂ reacts with water H₂O to form glucose. Oxygen is the gaseous product formed.
Thus Substance A is carbon dioxide and Substance B is oxygen.
