This is called bond energy, or bond enthalpy, and is measured in units of kilojoules per mole (kJ/mol).
Radium is more reactive than calcium so Ra.
Answer:
y = -2.5 + x
Explanation:
Given the data:
__X____Y
$20 __$17.50
$21 __ $18.50
$22__ $19.50
$23__ $20.50
Using a linear regression calculator :
The linear regression model obtained is :
y = -2.5 + x
Where ; - 2.5 = intercept ; gradient / slope = 1
the answer is 0.000097 KM
