Respuesta :
Calculating average atomic mass is exactly like calculating a weighted average. Perform the following calculation:
(mass1)(percentage1) + (mass2)(percentage2) = average atomic mass
(35.0)(0.75) + (37.0)(0.25) = average atomic mass
Make sure your percentages are in decimal form for this calculation.
One of the other answers given is correct, though the explanation is lacking a bit. Two of the answers can be eliminated immediately: 35.0 amu and 37.0 amu cannot be the average. If the mixture of isotopes was 50% and 50%, then 36.0 amu would be correct; however, the mixture is 75/25. This leaves only one possible answer choice.
(mass1)(percentage1) + (mass2)(percentage2) = average atomic mass
(35.0)(0.75) + (37.0)(0.25) = average atomic mass
Make sure your percentages are in decimal form for this calculation.
One of the other answers given is correct, though the explanation is lacking a bit. Two of the answers can be eliminated immediately: 35.0 amu and 37.0 amu cannot be the average. If the mixture of isotopes was 50% and 50%, then 36.0 amu would be correct; however, the mixture is 75/25. This leaves only one possible answer choice.
Answer:
The atomic mass of an element whose isotopes having mass 35 amu and 37 amu will be:
B. 35.5 amu
Explanation:
The average atomic mass of an element is calculated by the multiplication of each isotope with the addition of each isotope's mass. The mass of an element can be calculated by:
[tex]\begin{aligned}&=(35.0)\times (0.75)+(37.0)\times(0.25)\\&=26.25+9.25\\&=35.5 \end{aligned}[/tex]
From solving the equation, the average atomic mass of the given element will possibly be 35.5 amu.
For Further Reference:
https://brainly.com/question/1853460?referrer=searchResults
