Would you expect trna or mrna to be more extensively hydrogen bonded? why?

tRNA

Explanation:

Messenger RNA is formed by a single chain of nucleotides, in contrasting to DNA, that has a double helix connoting several hydrogen bonds between chains.  In this case mRNA doesn't compete with DNA hydrogen bonds, because it appears in a single chain.

In the case of tRNA, their secondary structure present domains with abundant hydrogen bonds forming hairpins, loops, bulges and so.  In this way more interactions en the same molecule (tRNA) exist in different of their parts.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

the ratio of the conjugate base to the acid required to attain the desired ph.