Find the oxidation state of each of the following

1. Se in H2SeO3
2. N in Al(NO3)3
3. H in BaH2
4. Si in Na4SiO4
5. I in NaIO4
6. O in Na2O2
7. Br in HBrO
8. N in N2O3
9. C in (NH4)2CO3
10. Si in NH4AlSiO4

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.

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

The gulf stream is a warm water current that flows away from the equator to northern europe. witch of these does it cause. a. crashes of warm and cool water in the ocean b.colder climates near the equator c.large waves on the cost of europe d.warm climates in northern europe