Which of the following reactions shows a chemical change producing a gas? O A. 2CH2OH() + 302(9) ► 2002(9) + 4H20 (1)
B. 2AgNO3(aq) + CaBr2(aq) → 2AgBr(s) + Ca(NO3)2(aq)
C. NaCl(s) - NaCl(aq)
O D. H2(g) + O2(g) → H20(1)

It takes 945.kj/mol to break a nitrogen-nitrogen triple bond. calculate the maximum wavelength of light for which a nitrogen-nitrogen triple bond could be broken by absorbing a single photon.

How to convert a density of 0.791g/cm3 to lb/ft3

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.