Math, asked by krishnatsp76gmailcom, 11 months ago

What is the mean of 40.1 +137.3 /2

Answers

Answered by Anonymous

Answer:

According to Dobereiner, the atomic weight(or the atomic mass) of the central element is nearly or exactly equal to the mean of the atomic weights of the other two elements in that triad.

In the case of Ca ( at. wt. = 40.0)

Sr ( at. wt. = 87.6)

Ba ( at. wt. = 137.3)

The atomic weight of the central element, Sr = (40 + 137.3)/2

= (177.3)/2

= 88.6

As this calculated value(=88.6) of Strontium is near to its actual atomic weight value(=87.6) ,Dobereiner suggested that Calcium , Strontium and Barium were also a triad.

Answered by sharmaastha215

Step-by-step explanation:

40.1 + 137.3 /2= 177.4/2 = 88.7

Mean = 88.7

hope this helps you

Previous Question

Next Question

Similar questions

Physics, 5 months ago

A Narrow Slit illuminated by light of wave length 4900° Aº is placed at a distance of 3m from a straight edge. If the distance between the straight edge and screen is 6m calculate the distance between the first and fourth band.

Math, 5 months ago

if x=–1 then find the value of x²+2x+1...