Aine

What is the origin of the idiom "I'm all ears"

Two positive charges q1 and q2 fixed to a circle. At the center of the circle they produce a net electric field that is directed upward along the vertical axis. Determine the ratio q2/q1. Angle for q1 is 30 degrees from diameter. Angle for q2 is 60 degree...

Given the following information determine the reaction Gibbs energy for the formation of silicon dioxide at 298 K Si(s)+O2(g) →SiO2(s) ΔfH°(Si(s))=0 kJ mol-1, S°(Si(s))=18.8 J mol-1 K-1 ΔfH°(O2(g))=0 kJ mol-1, S°(O2(g))=205.0 J mol-1 K-1 ΔfH°(SiO2­(s))=-9...