An element A contains two naturally occurring isotopes 17 35 A and 17 37 A. If the abundance of these two isotopes are 75% and 25% respectively. Calculate the average atomic mass of the element A.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

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