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The following replicate calcium determinations on a blood sample using atomic absorption spectrophotometry (AAS) and a new colorimetric method were reported. AAS:

10.9; 10.1; 10.6; 11.2; 9.70; 10.0.

New calorimetric method: 9.20; 10.5; 9.70; 11.5; 11.6; 9.30; 10.1; 11.2.

Is there a significant difference in the precision of the two methods at 95% confidence level?

Calculate the Gibbs free energy as a function of temperature for Ba, Ti, O2, BaO, TiO2, and BaTiO3.

1. use logarithms to transform nonlinear data into a linear relationship so we can use least squares regression method. 

I am having a horrible time trying to figure out how to do thesetypes of moment of inertia problems. Please help explain how tosolve the questions to this problem:

The roof of the student dining hall at your college will besupported by high cross-braced wooden beams attached in the shapeof an upside-down L. Each vertical beam is 10.0 ft high and 2.0 ftwide, and the horizontal cross-member is 8.0 ft long. The mass ofthe vertical beam is 364.0 kg, and the mass of the horizontal beamis 266.0 kg. As the workers were building the hall, one of thesestructures started to fall over before it was anchored into place.(Luckily they stopped it before it fell.)

(a) If it started falling from an upright position, what was theinitial angular acceleration of the structure? Assume that thebottom did not slide across the floor and that it did not fall outof plane; that is, during the fall, the structure remained in thevertical plane defined by the initial position of thestructure.
1 rad/s2

(b) What would be the magnitude of the initial linear accelerationof the upper right corner of the horizontal beam?
2 cm/s2

(c) What would the horizontal component of the initial linearacceleration be at this same location?
3 cm/s2

(d) Estimate the structure's rotational speed at impact.
4 rad/s

Explain structure of eye

It is either D-galactose or D-Mannose. I need to find out which sugar is then need to fill out the table based on these H NMR. and lable each peakThanks,