Data for the decomposition of dinitrogen monoxide on a gold surface at 1173 K are given below.
N2O --> N2 + ½ O2
Time (min)
15.0
30.0
80.0
120.0
[N2O] (mol/L)
0.0835
0.0680
0.0350
0.0220
Using a graphing calculator, plot a graph of 1/[N 2O] versus time. What is the linear regression correlation constant, r? Make sure to include at least 3 significant digits.(1)
The linear regression correlation constant is
Σ X = 250 , Σ Y = 0.2085 ,Σ XY = 8.7325 ,
Σ X2 = 21925 , Σ Y2 = 0.01330525
r = "\\frac{n\u2022\u03a3XY - \u03a3X\u2022\u03a3Y}{\\sqrt{[n\u03a3X^2-(\u03a3Y^2)]\u2022[n\u03a3Y^2-(\u03a3Y^2)]}}"
r = "\\frac{4\u00d78.7325-(245\u00d70.2025)}{\\sqrt{[4\u00d721924-245^2]\u2022[4\u00d70.01330525-0.2085^2]}}"
r= -0.9834
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