1) el hierro tiene de número atómico 26 y de número másico 55. las partículas del átomo neutro son:
a. número de protones
b. número de electrones
c. número de neutrones

Imagine that you own a property that is exactly 2.2 acres large. you want to sell your property, but your realtor tells you that you cannot sell your land by the acre. in order to sell your land you need to determine the area you own in units of square meters? given that there are 1.6 kilometers in 1 mile and 640 acres in 1 square mile, what is the area of land that you own in square meters square meters?

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

Which sample at stp has the same number of atoms as 18 liters of ne at stp