The Last one thank you thank you hope this helped!
Answer:
Absolute error 
% Error 
5
Explanation:
The absolute error is the the difference in the measured value and the actual value of a quantity.
Here the actual value is 
grams
The measured value is 
grams
Absolute error
Percent error
Where AE stands for absolute error and AV stands for absolute value.
%
<u>Answer: </u>The reaction between iodine and strontium is less reactive than the reaction of bromine and strontium.
<u>Explanation:</u>
Iodine and bromine belong to the same group which is Group 17 of the periodic table. Iodine lies in Period 5 and bromine lies in Period 4.
Reactivity of non-metals is defined as the tendency of the elements to gain electrons easily. This depends on the electronegativity values. More the electronegativity, more will be the reactivity and vice-versa.
Reactivity of non-metals decreases from moving down the group and increases across the period.
The electronegativity of iodine is less than bromine. Hence, it is less reactive than the bromine.
The reaction between strontium and bromine is more favorable because it is the reaction between two reactive elements.
Hence, the reaction between iodine and strontium is less reactive than the reaction of bromine and strontium.
Answer:
Take a look at this question:
https://brainly.in/question/24212862
Explanation:
