Clasifica los hechos o actos siguientes como cambios quimicos o fisicos:a. Prender un encendedor de butanob. La expansion del agua al congelarsec. la evaporación de alcohold. El enmohecimiento de un clavo de hierro

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.

Compare and contrast refraction of light and sound will give brainliest

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘