Balance the following equation occurring in a basic aqueous solution. Indicate which method you have chosen and show all steps relating to the balancing method. Once completed, show one method to check your work. MnO4 (aq) MNO2(ag) + CO2(g)

A circular double-stranded DNA molecule contains 4200 base pairs. In solu- tion the molecule is in a B-form helix, with about 10.5 base pairs per turn. The DNA circle has 12 superhelical turns. What is its superhelix density o?

Туре: 17) CAH8+O2→ - Туре: 18) KCI + Mg(OH)2 → Туре: 19) Zn +_ Au(NO2)2→ Туре: 20) KOH +_ H2SO4 → - Туре: 21) Bas + PtCl2> - Туре: DELL

Which statement best explains the chemical differencesbetween DNA and RNA? (a) DNA has two different sugarsin its sugar–phosphate backbone, but RNA only has one.(b) Thymine is one of the DNA bases, whereas RNA’s correspondingbase is thymine minus a methyl group. (c) TheRNA sugar–phosphate backbone contains fewer oxygenatoms than DNA’s backbone. (d) DNA forms double helicesbut RNA cannot.