I’m struggling in dimensional analysis. i’m trying to convert 17.6 mm^2 to in^2. i understand first we know 1 in = 2.54 cm. then how do you convert from cm to mm.

0.0272801

Explanation:

17.6 * * = 0.02728005 in^2. You have to square the value of 2.54 to convert cm to cm^2.

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.