Can you help me with the relative mass calculation and the average atomic mass please

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

What is the importance of interlocking the fingers and rubbing while washing hands? the palms are the dirtiest parts of the hands. the spaces between the fingers get washed. the backs of the hands get washed. the fingernails are the dirtiest parts of the hands

What is the reaction between an acid and a base