Unlike dna, rna a. contains two strands wrapped in a helix. b. has deoxyribose as the sugar within its nucleotide components. c. pairs uracil with adenosine instead of thymine. d. contains nitrogenous bases.

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.