What are the 2 ways to write the name of the most common isotope of Rhenium? Atomic number = 75

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.