How many grams are in 2.5 pound sample

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Calculate the number of moles of ethane in 100 grams

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d